estricto
strict, rigorous
adjective ehs-TREEK-toh Rare
Origin: From Latin strictus, past participle of stringere (to bind tight).
Usage Note
Estricto describes rules, people, or standards that allow no deviation. It is used with ser (a permanent characteristic): es muy estricto con los horarios ('he is very strict about schedules'). The adverb estrictamente ('strictly speaking') is common in formal writing. Do not confuse with estrecho ('narrow').
Examples
"La profesora es muy estricta con la puntualidad."
Natural Translation
The teacher is very strict about punctuality.

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