observe

watch it: Idiom Meaning and Origin

throw an eye: Idiom Meaning and Origin

take a look: Idiom Meaning and Origin

see a man: Idiom Meaning and Origin

look to: Idiom Meaning and Origin

look on: Idiom Meaning and Origin

keep the Sabbath: Idiom Meaning and Origin

keep tabs on: Idiom Meaning and Origin

keep an eye out: Idiom Meaning and Origin