As adverbs the difference between primly and trimly
is that primly is in a prim manner while trimly is in a trim manner.
primly
English
Adverb
(
en adverb)
In a prim manner.
* 1949 , Raymond Chandler, The Little Sister
- She was a small, neat, rather prissy-looking girl with primly smooth brown hair and rimless glasses
Synonyms
* (in a prim manner): precisely, properly