From Middle English under-, from Old English under-, from Proto-Germanic *under, from Proto-Indo-European *ndhero- (“lower”), akin to Old English under (“under, beneath”), Old High German untar (“under”), Latin infra (“below, beneath”).
- Under (in any sense): insufficient, insufficiently, below what is correct; subordinate to; beneath or behind.
- In many common cases, this prefix is attached directly to a word. When forming new words, however, it is typically hyphenated until the word becomes common.
From Proto-Germanic *under, from Proto-Indo-European *nter- (“between, among”), akin to Old English under "between, among, in the presence of", Old High German untar "between, among", Latin inter "between, among". More at inter-.
- between, among