iffy

/ˈɪfi/

//ˈɪfi// adj

By · According to Wiktionary data (CC BY-SA) ·

"iffy" is a 4-letter English headword indexed on PlainSpell.

The verdict

“iffy” sits in 17 confusable pairs (corpus #37,981) as an adjective. The look-alike neighbours are the real trap.

#37,981
frequency rank, English
2,140
“I” headwords
4
tracked misspellings
17
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Of dubious authenticity, legitimacy or legality.

Corpus desk

Index EN-iffy · iffy · English

iffy · rank #37,981 · 4 variants · 17 confusables

  • FREQ-MID #37,981
  • LEN-MID 4 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 17 pairs
  • VAR-LOW 4 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH IFC

Nearest frequency peer: IFC (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Frequency neighbours of confusable “iffy”

Peers at similar corpus weight, separate from look-alike pairs below

corpus weight

What this shows Bars place “iffy” against nearest ranked English headwords, not a reprint of the confusable-pair desk.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

iffy vs ivy
50% similar
iffy vs IMF
0% similar
iffy vs ifs
50% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for iffy
PropertyValue
Headwordiffy
LanguageEnglish
Part of speechAdjective
IPA/ˈɪfi/
Letters4
Frequency rank#37,981
Misspellings tracked4
Confusable pairs17
SourceWiktionary (kaikki.org)

Corpus rank beside confusables of “iffy”

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).iffylands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “IFC” (#37,980), “immovable” (#37,982), “impaled” (#37,983). Among 2,140 “I” headwords, “iffy” is #37,981. Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for iffy is neighbouring look-alikes ("ivy", "IMF", …), not just typos; it is anadjective pronounced /ˈɪfi/. Frequency #37,981 among 2,140 “I” headwords. 2 recorded senses keep meaning in play.

Our generated misspelling index lists 4 likely wrong-spelling variants for iffy, with forms such as "fify", "iffyy", and "ify". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 17 confusable-pair relationships, "ivy", "IMF", "ifs", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From if + -y. The correct English form is iffy, spelled I-F-F-Y.

Definition

  1. 1
    Of dubious authenticity, legitimacy or legality.
  2. 2
    Uncertain or chancy; risky.

Recorded use

Wiktionary examples

These source excerpts show how iffy appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. He's selling new CD players for £20 each – that sounds a bit iffy to me.
  2. The weather is still iffy for Saturday's rocket launch.

Etymology

From if + -y.

Synonyms

diceydodgydubiousfishyiffyquestionableshadyshonkysketchy

Antonyms

absolutereliablesolid

This word in other languages

louche(Français)dubios(Deutsch)

Common misspellings

Also misspelled as:

  • fify
  • iffyy
  • ify
  • ifyf

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of iffy - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

fify2iffyy1ify1ifyf2
Edit distance from "iffy"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "iffy"?
"iffy" is spelled I-F-F-Y. The IPA pronunciation is /ˈɪfi/.
What does "iffy" mean?
As an adjective, "iffy" means: Of dubious authenticity, legitimacy or legality.
What words are commonly confused with "iffy"?
"iffy" is commonly confused with "ivy", "IMF", "ifs". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "iffy"?
The IPA (International Phonetic Alphabet) transcription for "iffy" is /ˈɪfi/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "iffy"?
From if + -y. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "iffy", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 4 letters (nearest by frequency rank).

Iona#37,987jeju#37,992jizz#37,995guan#37,952

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list