unbelievable, unusual, unnatural, uneven, unwarranted
Un
defined
Un
natural
Un
nerving
Un
necessary
Un
decided
Some words that use the prefix 'un' are:unableunbelievableunconsciousundeniableunendingunfurledungainlyunholyunimaginableunjustunknownunlovedunmeritedunnoticedunownedunprovenunquietunrestunsinkableuntidyunusedunvariedunwantedunexplained (OK, so I cheated a little)unyieldingunzip
Use un- prefix before words that start with a vowel or consonant. Use il- prefix before words that start i: illegal. Use im- prefix before words that start with m or p: impossible. Use ir- prefix before words that start with r: irregular.
Umbrella, under, unbearable, and every word that can the prefix un- on it.
unfit
un-
Words that start with the prefix holy include:holystoneholydayholytide
Words with the prefix -im:immaterialimmatureimmobileimmortalimpartialimperfectimpossibleimpracticalimproperWords with the prefix -in:inaccurateinactiveincalculableincapableincapacitateinconceivableindescribableindiscriminateindivisibleineffectiveingrowninvisibleinvoluntary
Words with prefix un include unhappy, unsanitary, unwell, undone, uncompromising, unbelievable, unsettling, unassuming, unimaginative, unsaid... Many adjectives can be formed by adding the prefix un- to another adjective (that does not have a prefix already).
Words that start with the prefix af:AfroAffairAfterAfghanAfoulAfraidAffordAforeAfootAffirm
un is the prefix of familiar so there is no prefix for an already prefixed word
unfit & unable
unbelievable, unusual, unnatural, uneven, unwarranted