IPA: /ˈstɜrnɪst/
KK: /stɜrnɪst/
The most serious or strict in manner or attitude.
The teacher gave the sternest warning to the students before the exam.
Comparative: stern
Superlative: sternest
**Sternest** → It is formed from "stern" (from Old English *styrne*, meaning severe or strict) and the suffix "-est" (indicating the superlative degree). The word "sternest" means the most severe or strict in manner or appearance.
Think of someone who is the 'most severe' or 'strict' — 'stern' describes a strict demeanor, and '-est' shows that it is the highest degree of sternness.