punctual /ˈpʌŋ(k)tʃʊəl , -tjʊəl/
▸ adjective
1 happening or doing something at the agreed or proper time:
he's the sort of man who's always punctual.
2 Grammar denoting or relating to an action that takes place at a particular point in time. Contrasted with durative.
– DERIVATIVES punctuality /-ˈalɪti/ noun.
– ORIGIN late 17th cent.: from medieval Latin punctualis, from Latin punctum ‘a point’.