Flat.
As undulate means to rise and fall, become wavy or rippled, an antonym would be to "roughen".
No the word undulating is not a noun. It can be an adjective and a verb.
The fields of wheat were undulating in the breeze.
Undulating is a word used to describe something that has a wavy appearance. A good sentence would be, the girls hair was undulating.
Undulating.
The antonym of the word 'synonym' is 'antonym'.
now ____________ The word when does not have an antonym. Not every word has an antonym.
The antonym of the word 'out' is 'in'.
Undulating is a verb and requires an an adverb, not an adjective, which describes a noun: Slowly undulating, sensuously undulating.
Aversion is the antonym for the word tendency.
An antonym for the word enlarge is reduce. (An antonym is a word that means the opposite of another word.)
The singer's voice undulated