IPA: /ˌmæl.əˈprəʊ.pəʊ/
KK: /mæləˈprōpōs/
Not suitable or appropriate for a particular situation; something that feels out of place.
His comments during the meeting were malapropos and made everyone uncomfortable.
In a way that is not suitable or timely for a particular situation.
His comments were made malapropos during the serious discussion.
Malapropos → It is formed from "mal-" (meaning bad or ill) and "à propos" (meaning to the purpose or appropriate). The word "malapropos" means something that is inappropriate or ill-timed, indicating a bad fit for the situation.
Think of 'mal-' meaning bad and 'à propos' meaning appropriate — this helps you remember that malapropos refers to something that is not appropriate.