눈치 means 1. tact; sense; quick[ready] wit. used with 있다 없다 빠르다 느리다 채다 2. one's frame of mind; (facial) expression; a sign; a hint; an indication. used with 보다 보이다 살피다 주다 눈치 있다 have sense 눈치 없다 have no sense 눈치 보다 try to read one´s mind[face] 눈치만 보다 only try to read one´s mind[face], feel diffident 눈치가 빠르다 be quick-witted／be ready-witted／have quick wits／be tactful[sensible] 눈치를 살피다 study the pleasure of 《a person》／read[study] 《another's》 face[countenance]. 눈치를 보이다 express 《one's emotions》 by outward signs／betray 《one's mind》 in one's look. 눈치채다 become aware of [that]; be conscious [suspicious] of; suspect; sense; get wind [scent] of; smell; take hint of; get wise to.