sharpness; cutting ability
Describes the quality of a blade's edge; how well it cuts. Can be used literally for knives, swords, scissors, etc.
This kitchen knife cuts well.
Test the sharpness after sharpening.
incisiveness; quickness of wit; skill
Figurative extension: sharpness of mind, speech, or performance. Used for clever remarks, keen analysis, or technical brilliance.
His arguments are incisive.
That pianist's performance is technically brilliant.
peppiness (of a ball)
Sports term: describes a ball's lively, sharp movement (e.g., in baseball or tennis).
The ball he throws has exceptional movement.
This knife has a good, sharp edge.
His remarks are sharp and incisive.
Even as he tired, his pitches got sharper and livelier.
After years of use, the knife's edge has dulled.
I tried out the sharpness of the new kitchen knife.
Irregular okurigana usage; less common.