Sketchy

chelou

(of questionable or doubtful quality)

glauque

(of questionable or doubtful quality)

incomplet

(roughly or hastily laid out; intended for later refinement)

interlope

(suspected of taking part in illicit or dishonorable dealings)

louche

(of questionable or doubtful quality)

partiel

(roughly or hastily laid out; intended for later refinement)

sommaire

(roughly or hastily laid out; intended for later refinement)

superficiel

(roughly or hastily laid out; intended for later refinement)