adjective
transitory
TRAN-zuh-tor-ee/ˈtrænzətɔːri/
Lasting only a short time.
A snow crystal's beauty is transitory as it melts on a warm palm.

Etymology
Going across also suggests passing through or away rather than remaining. The sense of passing without continuing gives transitory its meaning of lasting only a short time.
In context
I think the word transitory has different meanings to different people to many it carries a time a sense of uh of short-lived
More examples
- The medication causes transitory dizziness that fades within minutes.
- Their relief is transitory; another problem soon demands attention.
- The construction creates only a transitory disruption to bus service.
Forms
transitory
transience noun — The state of lasting only briefly.