As adverbs the difference between briefly and transiently
is that briefly is (manner) in a brief manner, summarily while transiently is in a transient manner; momentarily; briefly.
briefly
English
Adverb
(
en adverb)
(manner) In a brief manner, summarily.
- He covered the subject briefly in his book.
(duration) For a brief period.
- He only worked here briefly .
(speech act) To be brief, in short.
- Briefly , I am not happy about what happened, but no one will be losing their job.