teacher
UK: ˈtiːtʃə | US: ˈtiːtʃər
n. a person who teaches, especially in a school
n. an experienced person who provides guidance or instruction
The word "teacher" originates from Old English tǣċan ("to show, instruct"), which evolved into Middle English techen. The suffix -er (from Old English -ere) denotes an agent noun, forming "teacher" to mean "one who teaches." The root teach reflects the act of imparting knowledge, while -er logically transforms it into a role. This structure is common in English (e.g., "writer," "baker"), emphasizing clarity and memorability.
The teacher explained the lesson clearly.
She became a teacher after graduating from university.
A good teacher inspires students to love learning.
He works as a language teacher in Spain.
The teacher assigned homework for the weekend.