Word Pronunciation & Dictionary

iff

/ɪf ən(d)ˈoʊn.li ɪf/

Word Rarity Rare

Frequency: 2.63 in modern English

Syllables: iff
IPA: /ɪf ən(d)ˈoʊn.li ɪf/

9

Scrabble Score

3

Letters

1

Syllables

2

Unique Chars

Meaning

conj

Abbreviation of if and only if.

conj

Obsolete spelling of if.

Obsolete

name

Initialism of Interchange File Format, a file format standard developed for Amiga computers.

name

Initialism of International Flavors & Fragrances

noun

Initialism of identification friend or foe.

name

Initialism of Independents from Frome.

British usage

Example Sentences

"A rectangle is a square iff all four of its sides have the same length."
"For iff the patient be aſhamed to diſcloſe hiſ wounde to the phyſician which knoweth it not , phyſicke can not helpe him."
"Another red alert last night. Lasted only five minutes, Possibly just a friendly plane with its IFF turned off."
"IFF confirmed. Contact is Pelican Dropship Kilo 23. Over."

Regional Pronunciation

American English: /ɪf ən(d)ˈoʊn.li ɪf/
British English: /ɪf ən(d)ˈəʊn.li ɪf/

Usage

Obsolete
British usage

Frequently Paired Words

if

Homonyms

if and only if

Questions

How do you pronounce iff?: The recorded pronunciation is /ɪf ən(d)ˈoʊn.li ɪf/.
What does iff mean?: Abbreviation of if and only if.

How to pronounce iff

Open the pronunciation page — Open the Speakur entry for “iff”.
Read the phonetic spelling — Read the IPA spelling (/ɪf ən(d)ˈoʊn.li ɪf/) so you know which sounds to aim for.
Play the audio — Click Play to hear reference audio for “iff”.
Repeat and practice — Say “iff” aloud, matching stress and vowels until it feels natural.