noun, na-adjective, noun which may take the genitive case particle 'no'
timely; opportune
Describes something happening at just the right moment, often with a nuance of being well-timed or seasonable. Used as a noun, na-adjective, or no-adjective.
His timely advice led to solving the problem.
A timely decision is required.
Update the information in a timely manner.
A timely decision is required.
時宜 is an even more formal word for 'the right moment', typically appearing in the set phrase 時宜を得た, whereas 適時 is used more freely in everyday writing.
適時 describes something happening at just the right time, while 時期尚早 describes something happening too early, before the right time has come.
定時 sounds similar to 適時 but means 'a fixed, scheduled time', not 'a well-timed moment'.
適当 shares the kanji 適 with 適時 but means 'suitable' or, informally, 'careless/haphazard', not 'well-timed'.
clutch hit; run-scoring hit; RBI hit
Compound of 適 (suitable, appropriate) and 時 (time). The reading てきじ is the standard on'yomi combination.