You can swap look with many of the words in the list that follows. Others need to be paired with eyes, gaze, or similar words.
admire
analyze
appraise
assess
audit
Beam
behold
blink
bore
browse
canvass
compare
catch a glimpse of
catch sight of
check out
consider
contemplate
criticize
cross-examine
dig into
eagle-eye
evaluate
examine
explore
eye
eyeball
feast one's eyes
ferret
fix
flash
flirt with
focus on
follow
frisk over
gander
gape
gawk
gawp
gaze
get a load of
give the once-over
glance
glare
glimmer
glimpse
gloat
glower
go through
goggle
grade
grill
hunt
inspect
interrogate
investigate
judge
lamp
lay eyes on
leaf through
leer
make eyes
make out
measure
monitor
moon
note
observe
ogle
outstare
pay attention to
peek
peer
peg
penetrate
perceive
peruse
pierce
pin
ponder
pore over
probe
pry
pump
question
quiz
rake
read
reconnoiter
regard
review
riffle
rivet
rubberneck
scan
scope
scout
scrutinize
search
see
sift
sight
size up
skim
spot
spy
squint
stalk
stare
study
surveil
survey
sweep
tackle
take a gander
take in
take notice
take stock of
track
view
watch
weigh
wink
winnow
witness
zero in