seperate
There is no antonym for bicycle. Some words just do not have an antonym.
Some words do not have opposites [antonyms]. The word "why" has no antonym
Yes, it can be an antonym for many words.
"Syn" means together or with, while "onym" means name or word. So when combined, "synonym" refers to words that have a similar meaning, and "antonym" refers to words that have opposite meanings.
Some words do not have opposites [antonyms]. The word "where" has no antonym.
Some words do not have direct opposites [antonyms]. The word "if" has no antonym.
Some words do not have direct opposites [antonyms]. The word "which" has no antonym.
Some words do not have direct opposites [antonyms]. The word "who" has no antonym.
Some words do not have direct opposites [antonyms]. The word "what" has no antonym.
Some words do not have direct opposites [antonyms]. The word "about" has no antonym.
Some words do not have opposites [antonyms]. Cheese has no antonym.
An antonym is a word that means the opposite of something else. So no, urge is not an antonym. It has antonyms, and it is the antonym of other words, but it is not, in itself, an antonym.