the.com/mismatch
Two things that swiped right on paper and instantly regretted meeting in person.
means A pairing of things that don't fit, agree, or correspond as they should.
from Built from Old English mis- (wrong, badly) bolted onto match, itself from gemæcca, a mate or equal — so literally a wrongly-made mate.
Tech senseImpedance mismatch wastes power and reflects signals back.
GeneticsDNA mismatch repair fixes mispaired bases constantly.
Sports tacticCoaches engineer mismatches to exploit a weaker defender.