Which to use
“mast” is a noun and “musty” is an adjective - they look or sound alike but fill different roles in a sentence.
- #14,584
- “mast” frequency rank
- #35,838
- “musty” frequency rank
- 50422
- confusion score
Side-by-Side Comparison
| Feature | mast | musty |
|---|---|---|
| Definition | A tall, slim post or tower, usually tapering upward, used to support, for example, sails or observation platforms on a ship, the main rotor of a helicopter, flags, floodlights, meteorological instruments, or communications equipment, such as an aerial, usually supported by guy-wires (except in the case of a helicopter). | Affected by dampness or mould; damp, mildewed, mouldy. |
Where the spellings diverge
Shared letters are muted; the letters that actually set mast and musty apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
mast and musty form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 50422, derived from the frequency rank of both members and their visual similarity.
mast is recorded at frequency rank #14,584, classified as anoun, pronounced /mɑːst/. musty is at rank #35,838, tagged as anadj, pronounced /ˈmʌsti/.
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 50422, this pair ranks #174,424 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "mast" and "musty" be used interchangeably?
Remembering mast vs musty
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “mast”; for an adjective, it's “musty”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “mast” entry
- Browse more pairs most likely to be confused. Most confusable