keep an eye on

watch carefully; supervise, watch over (e.g.: "I am keeping an eye on the pot to make sure the stew does not burn"; "Susan is keeping an eye on her younger brother while her parents are away")

Verb
1. follow with the eyes or the mind; "Keep an eye on the baby, please!"; "The world is watching Sarajevo"; "She followed the men with the binoculars"
(synonym) watch, observe, follow, watch over
(hypernym) check, check up on, look into, check out, suss out, check over, go over, check into
(hyponym) keep tabs on
(verb-group) trace, follow

watch carefully, continue paying attention to I asked my aunt to keep an eye on our apartment when we went away for our holiday.

Synonyms and related words:
attend to, au courant, baby-sit, be vigilant, be watchful, boss, care for, chaperon, cherish, conserve, eye, eyeball, follow, foster, gaze at, have a looksee, hold in view, keep account of, keep count of, keep in order, keep in sight, keep in view, keep informed, keep posted, keep track of, keep under observation, keep up on, keep watch over, look after, look at, look on, look out for, look to, look upon, matronize, mind, minister to, mother, nurse, nurture, observe, overlook, oversee, preserve, protege, provide for, reconnoiter, regard, ride herd on, scout, see after, see to, shepherd, spy upon, stand over, stay briefed, superintend, supervise, support, take care of, take charge of, tend, view, watch, watch out for, watch over
  

idm. เฝ้าดู, เฝ้ามอง