What is the meaning of Ur-?

Forming words with the sense of “proto-, primitive, original”.

ur- (proto-, primitive, original)

great-; indicates an additional generation of separation between relatives

very; used to intensify adjectives

ur-, proto-

ur- (proto-, primitive, original)

great-; indicates an additional generation of separation between relatives

very; used to intensify adjectives

romanization of 𐌿𐍂-

before, ante-, pro-

very

alternative form of for- (“over, superior, super-; outer, external; great, extreme”)

primeval, primordial, primitive, proto-

first, original

exceedingly, extremely, very

primeval, primordial, primitive, proto-

first, original

exceedingly, extremely, very

thoroughly

aboriginal, primeval, proto-, original (with general connotations of old)

very, super-

Source: wiktionary.org