Per-
prefix
prefix ·Rare ·Advanced level
Definitions
Prefix
- 1 In verbs: denoting the sense "through", as in perforate. idiomatic, morpheme
- 2 Denoting the sense "by" or "per", as in perchance or perhaps. idiomatic, morpheme
- 3 In verbs: denoting the sense "thoroughly", as in perfect. idiomatic, morpheme
- 4 In verbs: denoting the sense "to destruction", as in pervert. idiomatic, morpheme
- 5 In adjectives and adverbs: denoting the sense "extremely", as in perfervid. idiomatic, morpheme
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- 6 Forming nouns and adjectives denoting the maximum proportion of one element in a compound, as in peroxide. morpheme
- 7 Added to the name of an element in a polyatomic ion to denote the number of atoms of that element (usually four). morpheme
Synonyms
All synonymsEtymology
Etymology 1
Borrowed from Latin per and per-.
Etymology 2
Borrowed from Old French per (modern French par).
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.