1. apropos

of an appropriate or pertinent nature

Similar Words

• apposite
• apt
• pertinent

2. apropos, seasonably, timely, well-timed

at an opportune time

Example Sentences:
'your letter arrived apropos'

Synonyms

• seasonably
• timely
• well-timed

3. apropos, by the bye, by the way, incidentally

introducing a different topic; in point of fact

Example Sentences:
'incidentally, I won't go to the party'

Synonyms

• by the bye
• by the way
• incidentally