sharp - blunt traffic sign on blue sky

sharp blunt traffic sign blue sky cutting edged pointed keen razor-sharp acute piercing incisive penetrating jagged needle-like precise shrewd clever astute smart quick-witted nimble alert perceptive discerning bright clear crisp distinct vigilant observant intelligent accurate skillful proficient expert talented adroit dexterous skill ability competence precision sharpness clarity keenness insight brilliance sagacity wit cunning sly incisiveness sharp-witted