momentarily

adverb

1. for a moment; briefly: to pause momentarily.
2. at any moment; imminently: expected to occur momentarily.
3. instantly.

adverb

1. for an instant; temporarily
2. from moment to moment; every instant
3. US and Canadian very soon

adv.1650s, “for a moment,” from momentary + -ly (2). Meaning “at any moment” is from 1928.