Inconstant is a related term of whimsical.
As adjectives the difference between inconstant and whimsical
is that inconstant is not constant; wavering while whimsical is given to whimsy; capricious; odd; peculiar; playful; light-hearted or amusing.
inconstant
English
Alternative forms
* inconstaunt (obsolete)
whimsical
English
Adjective
(
en adjective)
Given to whimsy; capricious; odd; peculiar; playful; light-hearted or amusing.
Synonyms
* See also
Derived terms
* whimsical sex