sketchy /ˈskɛtʃɪ/ = suspicious, unreliable = сомнительный, не внушающий доверия,
Типичные выражения:
🔹 it is really / kind of sketchy that …
🔹 there is something sketchy about …
🔹 sketchy looking
🔹 to get into a sketchy situation
🔹 something sounds / looks sketchy