To pronounce "costar", say COST-ar — 2 syllables. Tap play below to hear it in four English accents, or practice it syllable by syllable.
costar
Tap to hear · American accent
Accent
If an accent sounds the same, your device is missing that voice — it falls back to the closest one.
Speed
Syllable by syllable — tap each one
Record yourself saying costar, then compare with the target. Your audio stays on this device — nothing is uploaded.
2
Syllables
6
Letters
COST-ar
Say it like
"costar" has 2 syllables: cost-ar. It rhymes with co-star and mostar, if that helps it stick.
noun
“The once famous actor objected to his costar having a bigger dressing room.”
“Alas, always a costar but never a star.”
verb
“People thought his career was over but now he will get to costar on Broadway next month.”
Practicing rhymes trains the same ending sounds.
"Costar" has 2 syllables: cost · ar.
Costar: A person who shares star billing
Want the definition, translations into 8 languages, and read-aloud for full sentences?
Open “costar” in the full dictionary →