Standard Lemma guide

per-

prefix · 7 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

prefix

Meaning 1

In verbs: denoting the sense "through", as in perforate.

Definition source: English Wiktionary via Wiktextract

Usage: idiomatic, morpheme

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

prefix

Meaning 2

In verbs: denoting the sense "thoroughly", as in perfect.

Definition source: English Wiktionary via Wiktextract

Usage: idiomatic, morpheme

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

prefix

Meaning 3

In verbs: denoting the sense "to destruction", as in pervert.

Definition source: English Wiktionary via Wiktextract

Usage: idiomatic, morpheme

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

prefix

Meaning 4

In adjectives and adverbs: denoting the sense "extremely", as in perfervid.

Definition source: English Wiktionary via Wiktextract

Usage: idiomatic, morpheme

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

prefix

Meaning 5

Forming nouns and adjectives denoting the maximum proportion of one element in a compound, as in peroxide.

Definition source: English Wiktionary via Wiktextract

Usage: morpheme

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

prefix

Meaning 6

Added to the name of an element in a polyatomic ion to denote the number of atoms of that element (usually four).

Definition source: English Wiktionary via Wiktextract

Usage: morpheme

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

prefix

Meaning 7

Denoting the sense "by" or "per", as in perchance or perhaps.

Definition source: English Wiktionary via Wiktextract

Usage: idiomatic, morpheme

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *per- Proto-Italic *per Latin perbor. Proto-Indo-European *per-der. Proto-Italic *peri- Latin per-bor. English per- Borrowed from Latin per and per-.

Borrowed from Old French per (modern French par).