IPA: /ˈmʌməntli/
KK: /ˈmɒməntli/
At any moment or for a very short time.
The train could arrive momently, so we should be ready to board.
Momently → It is formed from "moment" (from Latin "momentum", meaning movement or a brief period of time) and the suffix "-ly" (meaning in a manner of). The word "momently" means in a manner relating to a brief period of time or moment.
Think of a 'moment' as a brief period of time, and remember that 'momently' describes something happening in that brief manner.