unmighty

As a noun terms

is .

As an adjective unmighty is

not mighty; weak.

As adjectives the difference between weak and unmighty

is that weak is lacking in force (usually strength) or ability while unmighty is not mighty; weak.

As adjectives the difference between mighty and unmighty

is that mighty is very strong; possessing might while unmighty is not mighty; weak.

As a noun mighty

is influential, powerful beings or mighty can be (obsolete|rare) a warrior of great strength and courage.

As an adverb mighty

is (colloquial) very; to a high degree.