PASSING

n.

Function: adjective

Date: 14th century

1 : going by or past <a passing pedestrian>

2 : having a brief duration <a passing whim>

3 obsolete : SURPASSING

4 : SUPERFICIAL <a passing acquaintance> <a passing resemblance>

5 a : of, relating to, or used in or for the act or process of passing < passing lanes> b : given on satisfactory completion of an examination or course of study <a passing grade>