Her search is less thorough than the maid's but there is a touch of fury in it, that quite makes up for its sketchiness.
A glass jar of pickle and one of olives added to the sketchiness of the table.
1805, "having the form or character of a sketch," from sketch (n.) + -y (1). Colloquial sense of "unsubstantial, imperfect, flimsy" is from 1878, perhaps via the notion of "unfinished." Related: Sketchily; sketchiness.
Offering little information: sketchy details