Antonyms of adj untimely

2 senses of untimely

Sense 1
ill-timed, unseasonable, untimely, wrong -- (badly timed; "an ill-timed intervention"; "you think my intrusion unseasonable"; "an untimely remark"; "it was the wrong moment for a joke")

INDIRECT (VIA inopportune) -> opportune -- (suitable or at a time that is suitable or advantageous especially for a particular purpose; "an opportune place to make camp"; "an opportune arrival")

Sense 2
premature, untimely -- (uncommonly early or before the expected time; "illness led to his premature death"; "alcohol brought him to an untimely end")

INDIRECT (VIA late, early) -> middle -- (between an earlier and a later period of time; "in the middle years"; "in his middle thirties")
INDIRECT (VIA early, middle) -> late -- (being or occurring at an advanced period of time or after a usual or expected time; "late evening"; "late 18th century"; "a late movie"; "took a late flight"; "had a late breakfast")

Similarity of adj untimely

2 senses of untimely

Sense 1
ill-timed, unseasonable, untimely, wrong -- (badly timed; "an ill-timed intervention"; "you think my intrusion unseasonable"; "an untimely remark"; "it was the wrong moment for a joke")
       => inopportune (vs. opportune) -- (not opportune; "arrived at a most inopportune hour"; "an inopportune visit")

Sense 2
premature, untimely -- (uncommonly early or before the expected time; "illness led to his premature death"; "alcohol brought him to an untimely end")
       => early (vs. middle) (vs. late) -- (at or near the beginning of a period of time or course of events or before the usual or expected time; "early morning"; "an early warning"; "early diagnosis"; "an early death"; "took early retirement"; "an early spring"; "early varieties of peas and tomatoes mature before most standard varieties")

Synonyms of adv untimely

1 sense of untimely

Sense 1
prematurely, untimely -- (too soon; in a premature manner; "I spoke prematurely")