fearless
unafraid
unemotional
agile
alert
alive
attentive
awake
bright
calm
coolheaded
inexcitable
keen
nerveless
nimble
on the
on the alert
on the ball
on the job
prompt
qui vive
quick
ready
relaxed
rock-steady
sharp
sleepless
smart
steady
steady-handed
steady-nerved
steel-nerved
strong-nerved
unabashed
unappalled
unawed
unblenching
uncowed
uncringing
undaunted
undismayed
unfaltering
unflinching
unintimidated
unnervous
unnodding
unquivering
unshaken
unshaky
unshrinking
unsleeping
unstrained
untremulous
baleful
beady
bloodshot
deep-set
expressionless
eyeless
glassy
hazel
narrow-eyed
oxlike
round-eyed
sightless
steely
unfocused
unmoving
unreadable
unrelenting
unremitting
unsmiling
unwinking
wide-open
yellow-eyed