cardinal

noun adjective

Stress: first syllable

Syllables: car-di-nal (3)
English Definition

Of prime importance; or a high-ranking Catholic priest; or a red bird

Example Sentence

A cardinal rule of this game is honesty.

US IPA /ˈkɑːrdɪnl/
UK IPA /ˈkɑːdɪnl/

Synonyms

fundamental principal chief essential

Antonyms

secondary negligible minor