blasted [slang], blind, blitzed [slang], blotto [slang], bombed, boozy, canned [slang], cockeyed, crocked, drunk, drunken, fried, gassed, hammered [slang], high, inebriate, inebriated, intoxicated, juiced [slang], lit, lit up, loaded [slang], looped, oiled [slang], pickled, pie-eyed, plastered, potted [slang], ripped [slang], sloshed [slang], smashed [slang], sottish, soused, sozzled, squiffed (or squiffy), stewed, stiff, stinking [slang], stoned, tanked [slang], tight, tipsy, wasted [slang], wiped out [slang]

groundless, illogical, invalid, irrational, nonrational, nonsensical, nonvalid, unfounded, uninformed, unjustified, unreasonable, unreasoned, unsound