What is the meaning of Mear?

Alternative form of mere (“boundary”).

quick, fast, nimble, lively, spirited

precipitate, hasty, rash; quick-tempered, fiery

1. mad, crazy
2. furious, raging, mad angry

mad, crazy

furious, raging, mad angry

alternative form of mearaigh (“derange, distract; bewilder, confuse; excite, infuriate; bother, trouble; become distracted, bewildered; become infuriated”)

but

alternative form of mearh

to halve (divide into two)

merry, joyful

playful, lively

to piss, to pee

to wet, to urinate accidentally in or on

lake

comparative degree of folle: more

To a greater degree or extent, more

Used to form the comparative degree of adjectives and adverbs where -er cannot be used.

Source: wiktionary.org