[ adjective ] moving or passing by very swiftly
"fleeting clouds passing before the face of the moon"
[ adjective ] lasting for a markedly brief time
"a fleeting glance" "fugitive hours" "rapid momentaneous association of things that meet and pass" "a momentary glimpse"
Used in print(Robert Heinlein, Stranger in a Strange Land....)
Jubal did not hear of Digby 's disappearance when it was announced , and , when he did , while he had a fleeting suspicion , he dismissed it ; if Mike had had_a_finger_in it , he had gotten_away_with it - and what happened to supreme bishops worried Jubal not at_all as_long_as he was n't bothered .