going by or past; elapsing

He was feeling better with each passing day.

brief, fleeting, or fortuitous; transitory

to take a passing fancy to something.

done, given, etc., in passing; cursory

a passing mention.

surpassing, preeminent, or extreme.

indicating satisfactory performance in a course, on a paper, in a test, etc.

a passing grade on a test.

surpassingly; exceedingly; very.

the act of a person or thing that passes or causes something to pass.

a means or place of passage. ?

in passing

by the way; incidentally

The speaker mentioned his latest book in passing.

adjective

lasting , long-lasting , permanent

noun

birth , living

adjective

cursory , ephemeral , evanescent , fleeting , fugacious , fugitive , glancing , hasty , impermanent , momentary , quick , shallow , short , short-lived , slight , superficial , temporary , transient , transitory , fleet , temporal

noun

decease , defunction , demise , dissolution , end , finish , loss , silence , sleep , termination , extinction , quietus , rest , adequate , brief , cursory , death , elapsing , ephemeral , exceeding , fleeting , illusive , momentary , quick , temporary , transitory