Adjective: Taciturn (TASS-uh-tern)
Definition: Temperamentally disinclined to talk.
Sample sentence: The waiter, previously friendly and good-humored, suddenly became solemn and taciturn.
Adjective: Taciturn (TASS-uh-tern)
Definition: Temperamentally disinclined to talk.
Sample sentence: The waiter, previously friendly and good-humored, suddenly became solemn and taciturn.