English doesn't have any words which function the same way as not, but you can avoid using it, or substitute in other words which convey a negative.
Examples:
That does not make sense versus That is nonsense.
I am not happy right now versus I am unhappy.
What is synonym for merchant? What is synonym for merchant?
synonymize
What is the synonym government.
you are a synonym of abandoned.
a synonym to..?
What is synonym for merchant? What is synonym for merchant?
synonymize
What is the synonym government.
you are a synonym of abandoned.
a synonym to..?
no it is not a synonym
a synonym for abducting is kidnapping
A synonym for varied is diverse.
Testicles is the synonym for testes.
A synonym for temper is temperament.
Another name for the word synonym is poecilonym.
"Alternate word" is a noun-phrase that is kind of a synonym for the word "synonym. There is no one exact word that means the same as synonym.