IPA: /ˈstrɪktɪst/
KK: /strɪktɪst/
The most demanding or firm in rules or standards.
The strictest teacher in the school expects all students to follow the rules without exception.
Comparative: stricter
Superlative: strictest
Strictest → It is formed from "strictus" (from Latin, meaning drawn tight or rigid) and the superlative suffix "-est" (meaning most). The word "strictest" refers to the most rigid or severe in terms of rules or discipline.
Think of someone who is the 'most rigid' ('strictus') in enforcing rules — that's what 'strictest' means.
No commonly confused words.