Definitions

1. adjective

not clearly defined or sharply outlined

“The edges of the painting were undersharp, giving it a dreamy quality.”

2. noun

a point on a lens or mirror where the image is not sharply defined

“The undersharp was noticeable in the amateur’s camera lens, causing blurry images.”

3. adverb

in a way that is not clearly defined or sharply outlined

“The movie’s plot was undersharp, making it difficult to follow.”