if and only if en · CCONJ
Pronunciation
Meanings
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Is equivalent to; implies and is implied by; is true and false in the same cases as.
A rectangle is a square if and only if all four of its sides have the same length.
An integer is even if and only if its square is also even.
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(broadly, informal) Synonym of if (with added intensity)
I'll let you go to the concert if and only if you clean your room.
Hypernyms
Relateds
if · ↔ · ⇔ · when and only when · only if · if and when · iff
Synonyms
Translations (41)
fi jos ja vain jos (implies and is implied by) · cmn 當且僅當 /当且仅当 (implies and is implied by) · hu akkor és csakis akkor, ha (implies and is implied by) · ar شَرِيطَةً أَنَّ (implies and is implied by) · fr si et seulement si (implies and is implied by) · de dann und nur dann, wenn (implies and is implied by) · cs právě tehdy, když (implies and is implied by) · tr ancak ve ancak (implies and is implied by) · ar فَقَط إِذَا (implies and is implied by) · ru тогда́ и то́лько тогда́ (implies and is implied by) · eo se kaj nur se (implies and is implied by) · ka მხოლოდ იმ შემთხვევაში, თუ (implies and is implied by) · mk ако и само ако (implies and is implied by) · he אם ורק אם (implies and is implied by) · es si y sólo si (implies and is implied by) · de genau dann, wenn (implies and is implied by) · fa اگر و فقط اگر (implies and is implied by) · vi khi và chỉ khi (implies and is implied by) · el αν και μόνο αν (implies and is implied by) · ar فَقَط فِي حَالَة (implies and is implied by) · sl če in samo če (implies and is implied by) · cmn 若且唯若 (implies and is implied by) · pl wtedy i tylko wtedy (implies and is implied by) · nl dan en slechts dan als (implies and is implied by) · th ก็ต่อเมื่อ (implies and is implied by) · lt tada ir tik tada (implies and is implied by) · arz بس لو (implies and is implied by) · vi nếu và chỉ nếu (implies and is implied by) · ca si i només si (implies and is implied by) · it se e solo se (implies and is implied by) · pt se e somente se (implies and is implied by) · sv om och endast om (implies and is implied by) · ro dacă și numai dacă (implies and is implied by) · nl als en slechts als (implies and is implied by) · da hvis og kun hvis (implies and is implied by) · arz بشرط إن (implies and is implied by) · ar شَرْطَ أَنّ (implies and is implied by) · is þá og því aðeins að (implies and is implied by) · ga is gá agus is leor (implies and is implied by) · eu baldin eta soilik baldin (implies and is implied by) · is ef og aðeins ef (implies and is implied by)