[Conscientious]

المشاركة الأصلية كتبت بواسطة Al-majesty Regard to u r topic absolutely I hope so I have some info, I would it will help Like IN means not Incorrect , Invalid UN means not and opposite uncertain, unsure I wish what I did that u want

ummm, not exactaly

i mean the rule , for example if the word starts with so and so we attach " un " to it

and the same thing with "in "a

but i'm not sure that there is a rule , i'm just thinking of searching about this matter

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but i have some similar rules to what i'm thinking of

here u r


Prefixes: in-, il-, ir-, im-

Another prefix meaning "not" or "the opposite of" is in-.
However the spelling of this prefix often changes to
match the first letter of the base word. This sometimes
results in a double letter.
So, if we want to say the opposite of legal we say
"illegal" instead of "inlegal" (which would be awkward
to get your tongue around!).
The pattern is like this:
*Use il- before words starting with l.
So not legible = illegible.
*Use ir- before words starting with r.
So not relevant = irrelevant
*Use im- before words starting with m but also in front
of words starting with p.
So: not mature = immature not perfect = imperfect.

and this is the link

http://www.spelling.hemscott.net/prefix3.html

good luck