- timely, seasonable, well-timed, well timed - done or happening at the appropriate or proper time; "a timely warning"; "with timely treatment the patient has a good chance of recovery"; "a seasonable time for discussion"; "the book's publication was well timed"
Antonym: inopportune (indirect, via opportune)
- seasonably, timely, well-timed, apropos - at an opportune time; "your letter arrived apropos"