There are several words with the prefix "un". Here's a list of a few:
unaware, unbearable, unbeatable, unbelievable, unconscious, undecided, uneven, unobtainable, unforgettable, unhappy, unlucky, unknown, unsweetened, unruly, unthinkable, unusual, untitled
No, "un-" is a prefix that is added to words to indicate a negation or reversal of the word's meaning. "Unbelievable" is a word itself, formed by adding the prefix "un-" to "believable."
unfit
Some words that use the prefix 'un' are:unableunbelievableunconsciousundeniableunendingunfurledungainlyunholyunimaginableunjustunknownunlovedunmeritedunnoticedunownedunprovenunquietunrestunsinkableuntidyunusedunvariedunwantedunexplained (OK, so I cheated a little)unyieldingunzip
un is the prefix of familiar so there is no prefix for an already prefixed word
unfit & unable
The prefix is un-. This prefix means not.
yes, un- is a prefix.
The prefix is un-
the prefix is un-
The prefix in unexceed is un-. This prefix means not.
unbelievable, unusual, unnatural, uneven, unwarranted
No