teach Definition

teach
verb teaches, taught, teaching

1. To give knowledge to someone; to instruct someone in a skill or help them to learn.

Thesaurus: educate, instruct, train, tutor, enlighten, inform, advise, coach, school, verse, edify.
tr & intr
2. To give lessons in (a subject), especially as a professional.
3. Said of circumstances or experience, etc: to make someone learn or understand, especially by example, experience or punishment.

Example: Experience had taught her to be cautious
4. To force home the desirability or otherwise of a particular action or behaviour, etc.

Example: That'll teach you to be more polite

Derivative: teachable
adj

Idiom: teach one's grandmother to suck eggs

colloq
To try to show someone more experienced than oneself how to do something they already know how to do.

Idiom: teach someone a lesson

To demonstrate and reinforce their mistake.

Idiom: teach school

( Amer)
To be a teacher in a school.

Etymology: Anglo-Saxon tæcan.