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From Wiktionary, the free dictionary

English

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Etymology 1

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From Ancient Greek -άς (-ás) (genitive -άδος (-ádos)): a suffix forming feminine nouns.

Suffix

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-ad (noun-forming suffix, plural -ads)

  1. A unit or set (especially of a specified number).
    chiliad, duodecad
Derived terms
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Etymology 2

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    Derived from Latin ad (at), from Proto-Italic *ad, from Proto-Indo-European *h₂éd. Coined by British anatomist John Barclay.

    Suffix

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    -ad (adverb-forming suffix, comparative more -ad, superlative most -ad)

    1. (medicine, anatomy) toward
      tibiad; ulnad
    Coordinate terms
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    • (didn't catch on) -en
    Derived terms
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    Anagrams

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    Hungarian

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    Pronunciation

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    Suffix

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    -ad

    1. (possessive suffix) your (second-person singular informal, single possession)
      ház (house)a házad (your house)
    2. (fraction-forming suffix) -th. Added to a cardinal number to form a fraction.
      száz (hundred)század (hundredth)
    3. (verb-forming suffix) Added to a stem to form a verb.
      olvad (to melt)
      szak (part) + ‎-ad → ‎szakad (to tear (clothing))
    4. (settlement suffix) Suffix in names of settlements.
      Sarkad, Várad

    Usage notes

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    • (possessive suffix) Variants:
      -d is added to words ending in a vowel. Final -a changes to -á-. Final -e changes to -é-.
      -ad is added to some back-vowel words ending in a consonant
      -od is added to the other back-vowel words ending in a consonant
      -ed is added to unrounded (and some rounded) front-vowel words ending in a consonant
      -öd is added to most rounded front-vowel words ending in a consonant
    • (fraction-forming suffix) Variants:
      -d is added to words ending in a vowel
      -ad is added to some back-vowel words ending in a consonant
      -od is added to some other back-vowel words ending in a consonant
      -ed is added to unrounded front-vowel words ending in a consonant
      -öd is added to rounded front-vowel words ending in a consonant
    • (verb-forming suffix) Variants:
      -ad is added to back-vowel words
      -ed is added to front-vowel words
    • (settlement suffix) Variants:
      -d is added to words ending in a vowel
      -ad is added to some back-vowel words ending in a consonant
      -od is added to some other back-vowel words ending in a consonant
      -ed is added to unrounded front-vowel words ending in a consonant
      -öd is added to rounded front-vowel words ending in a consonant

    Derived terms

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    See also

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    Norwegian Nynorsk

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    Suffix

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    -ad

    1. (archaic, nonstandard) Used to form past participle form of many weak verbs

    Alternative forms

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    Old English

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    Suffix

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    -ad

    1. alternative form of -od

    Declension

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    See also

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    Old Irish

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    Alternative forms

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    • -ed (slender form)
    • -ud (often with A II verbs)

    Etymology 1

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    From the various thematic vowels of verb stems plus Proto-Celtic *-tus, i.e. from *-atus, *-ātus, *-etus, and *-ītus.

    Suffix

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    -ad m (forms the genitive singular in -(a)tho)

    1. suffix forming verbal nouns
    Derived terms
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    Descendants
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    • Irish: -adh
    • Manx: -ey
    • Scottish Gaelic: -adh

    Etymology 2

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    From the various thematic vowels of verb stems plus Proto-Celtic *-to, i.e. from *-ato, *-āto, *-eto, and *-īto.

    Suffix

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    -ad

    1. suffix forming the third-person singular imperative form
    2. suffix forming the third-person singular imperfect indicative form
    3. suffix forming the third-person singular past subjunctive form
    4. suffix forming the third-person singular conditional form of reduplicated and ē-future stems
    5. suffix forming the singular passive conjunct preterite form of s-preterite stems

    Serbo-Croatian

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    Suffix

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    -ād f (Cyrillic spelling -а̄д, noun-forming suffix)

    1. suffix appended to words to create a feminine noun, usually a collective noun
      mòmče (young man (expressive)) + ‎-ad → ‎mȍmčād (team, crew)
      ždrȇbe (foal) + ‎-ad → ‎ždrȅbād (group of foals)
      pȁstorče (stepchild) + ‎-ad → ‎pȁstorčād (stepchildren (collectively))

    Derived terms

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    Further reading

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    • Klajn, Ivan (2003), Tvorba reči u savremenom srpskom jeziku 2: Sufiksacija i konverzija [Word formation in modern Serbian 2: Suffixation and conversion], Belgrad: Zavod za Udžbenike i Nastavna Sredstva, →ISBN, →OCLC, page 22

    Spanish

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    Etymology

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    From Latin -āte (second-person plural present active imperative ending of first conjugation verbs).

    Suffix

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    -ad

    1. used to form the informal second-person plural imperative mood of -ar verbs
      hablar (to talk) + ‎-ad → ‎¡Hablad! (Talk!)

    Swedish

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    Suffix

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    -ad

    1. -ed, used to form adjectives from nouns, in the sense of having the object represented by the noun.
    2. suffix forming past participle

    Derived terms

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    Anagrams

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    Welsh

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    Alternative forms

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    Pronunciation

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    Etymology 1

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    Cognate with Cornish -as.

    Suffix

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    -ad m (plural -adau)

    1. show the action of a verb or its result
      dechrau (to start, to begin) + ‎-ad → ‎dechreuad (start, beginning)
      teimlo (to feel) + ‎-ad → ‎teimlad (feeling)
      dileu (to delete, to erase) + ‎-ad → ‎dilead (deletion, erasure)

    Etymology 2

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      From Proto-Brythonic *-ad, from earlier *-atus, a late (British) variant of *-ātus, used to form verbal nouns from Celtic ā-stem verbs.

      Suffix

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      -ad m (plural -aid)

      1. suffix indicating an agent noun: -er, -or
        cadw (to keep) + ‎-ad → ‎ceidwad (keeper)
        galw (to call) + ‎-ad → ‎geilwad (caller)
      2. person who comes from somewhere or is classed by something, -ian, -ist
        Ewrop (Europe) + ‎-ad → ‎Ewropead (European)
        Corea (Korea) + ‎-ad → ‎Coread (Korean)
        Norwy (Norway) + ‎-ad → ‎Norwyad (Norwegian)
      Derived terms
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      Etymology 3

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        Borrowed from English -ate, altered in the same manner as basged (basket).

        Suffix

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        -ad m (plural -adau)

        1. (chemistry) -ate, suffix denoting one of a group of related compounds - nitrad (nitrate), sylffad (sulfate).
        Derived terms
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        Further reading

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        • R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “-ad”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies

        Yapese

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        Suffix

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        -ad

        1. Plural (3 or more) pronoun marker.