Nonundulating is a antonym of undulating.
As adjectives the difference between undulating and nonundulating
is that undulating is moving up and down like waves; wavy while nonundulating is not undulating.
As a verb undulating
is present participle of lang=en.
undulating
English
Adjective
(
en adjective)
Moving up and down like waves; wavy
Forming a series of regular curves
Verb
(head)
nonundulating
English
Adjective
(-)
Not undulating.
Antonyms
* undulating