Sinus

5 lettersnoun

Updated June 2026

Definition

a cavity within a bone, especially in the skull

“The blocked sinus caused a persistent headache.”

Pronunciation

Syllables

si·nus

Related Words

Synonyms

fistula

Word Game Tips

🟩

Wordle

"Sinus" repeats a letter (4 unique of 5), so it rules out fewer options as an opening guess. Its 2 vowels balance the consonants.

🔤

Scrabble

"Sinus" is worth 5 points before board bonuses. Aim its letters at double/triple-letter and word squares to lift the score.

Words Related to Sinus

Anagrams of Sinus

Words that use exactly the same letters as “sinus”.

nisus

Words one letter different

Change a single letter of “sinus” to make these 5-letter words — useful for Wordle and crossword clues.

ainus dinus linus minus pinus sines sings sinhs sinks situs

Explore Similar Words

5-letter words starting with S 5-letter words ending with S All 5-letter words 4-letter words 6-letter words All word lists

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Dictionary References

Look up sinus in an authoritative dictionary for full definitions, pronunciation, and etymology.

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