[观衅伺隙 / 觀釁伺隙, guān xìn sì xìㄍㄨㄢ ㄒㄧㄣˋ ㄙˋ ㄒㄧˋ] lit. to look for holes, and observe gaps (成语 saw); to search out one's opponent's weak points; to look for the Achilles heel
[うかがう, ukagau] (v5u, vt) (1) (hum) to ask; to inquire; to hear; to be told; (2) to implore (a god for an oracle); to seek direction (from your superior); (v5u, vi) (3) (hum) to visit; (4) (from 御機嫌を伺う) to speak to (a large crowd at a theatre, etc.); (P)