Which to use
“inadequacy” is a noun and “inadequate” is an adjective - they look or sound alike but fill different roles in a sentence.
- #37,508
- “inadequacy” frequency rank
- #9,348
- “inadequate” frequency rank
- 46856
- confusion score
Side-by-Side Comparison
| Feature | inadequacy | inadequate |
|---|---|---|
| Definition | The state of being inadequate. | Not adequate; lacking in quality or quantity required; insufficient for a purpose. |
Where the spellings diverge
Shared letters are muted; the letters that actually set inadequacy and inadequate apart are highlighted. They share 8 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: inadequacy is /ɪˈnædɪkwəsi/ while inadequate is /ɪnˈædəkwɪt/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 46856, derived from the frequency rank of both members and their visual similarity.
inadequacy is recorded at frequency rank #37,508, classified as anoun, pronounced /ɪˈnædɪkwəsi/. inadequate is at rank #9,348, tagged as anadj, pronounced /ɪnˈædəkwɪt/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 46856, this pair ranks #207,813 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of inadequacy vs inadequate
Shared letters: adeinqu. Private to "inadequacy": cy. Private to "inadequate": t.
"inadequacy" · 10 letters · shape VCVCVCVVCV · "inadequate" · 10 letters · shape VCVCVCVVCV
Known mistypes of this pair
- inadequacy ← iandequacy · inaddequacy · inadeqaucy · inadeqquacy · inadequaccy · inadequacyy · inadequayc · inadequcay
- inadequate ← iandequate · inaddequate · inadeqaute · inadeqquate · inadequaet · inadequatte · inadequtae · inadeuqate
Frequency comparison
Frequently Asked Questions
Can "inadequacy" and "inadequate" be used interchangeably?
Which is more common, "inadequacy" or "inadequate"?
Remembering inadequacy vs inadequate
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “inadequacy”; for an adjective, it's “inadequate”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “inadequacy” entry
- Browse more pairs most likely to be confused. Most confusable