potential of 解す (gesu)

(chiefly in the negative) to understand, to comprehend

(chiefly in mathematics, physics) for simplicity; for the sake of simplicity

ease / simplicity / lightness, brevity

easy / simple, uncomplicated / brief, light, short

(with negative verbs) no one, nobody / anyone, anybody

somebody, someone

who / someone

(archaic) Synonym of 誰が (dare ga, “who”, nominative)

Used other than figuratively or idiomatically: see 誰, が.