unusual
The word is spelled unusual, just as you spelled it. "Usual" is the base word, and "un-" is the prefix.
Usually Unusual Unusually
-un. Example: unusual (not usual, out of the ordinary)
In the word atypical, the prefix a means not; atypical means not typical.
Adding the prefix "over-" to the word "priced" changes the meaning of the word to "priced higher than usual or beyond reasonable value".
A prefix for "common" is "un-". When added to "common," it changes the meaning to "uncommon," which indicates something that is not ordinary or usual. Prefixes are morphemes added to the beginning of a word to modify its meaning.
Hyper- is a fairly common prefix, found in such words as hypertension, hyperactive, hyperthermia. It means "more than usual". It is the opposite of the prefix hypo-, which means "less than normal".
It's not a prefix in the usual way, like 're' or 'in', but comes from the Latin word 'efficire', meaning efficient or capable of producing the desired effect.
regular cause for .e.g- regular iregualr cause a prefix is words connecting to the original word for .e.g-do redo, usual unusual and cause because
A word part is basically a couple of simple letters such as in, un, de. The simple use of putting the word part "un" in front of words completely changes the meaning to the opposite. ie. Something necessary becomes unnecessary, usual to unusual. Thereby simply adding a wordpart can completely change the meaning of a word.
No the word forefather is not a prefix, but there is a prefix in the word. The prefix in the word forefather is Fore, meaning before.
Root word is usual.