Definition from Wiktionary, the free dictionary
Jump to: navigation, search
See also: -ītis, itis, and itiş



From New Latin -itis, from Ancient Greek -ῖτις ‎(-îtis, pertaining to). This is the feminine form of adjectival suffix -ίτης ‎(-ítēs) because it was used with the feminine noun νόσος ‎(nósos, disease), particularly with ἀρθρῖτις (νόσος) ‎(arthrîtis (nósos), disease of the joints) (one of the earliest English borrowings from which the suffix was extracted and abstracted).[1] Humorous sense by generalization.


-itis (usually uncountable, sometimes -itides or rarely -itises)

  1. (pathology) Suffix denoting diseases characterized by inflammation, itself often caused by an infection.
  2. (humorous) Used to form the names of various fictitious afflictions or diseases.
    • What to Do About Senioritis: Make Your Senior Year Count, College Board. Accessed April 4, 2008.[2]

Usage notes[edit]

While most of the derived terms theoretically have plurals in -itides (from the Ancient Greek -ῑ́τῐδες ‎(-ī́tides), plural of -ῖτῐς ‎(-îtis)) and a few in -itises (the standardized English plural), these forms are rarely used as the derived terms describe conditions but rarely specific instances of those conditions.

Derived terms[edit]




  1. ^ -itis. Dictionary.com.
  2. ^ What to Do About Senioritis: Make Your Senior Year Count

External links[edit]





  1. dative plural of -ītēs
  2. ablative plural of -ītēs