unblinking (adj.)

• agile
• alert
• alive
• attentive
• awake
• bright
• calm
• coolheaded
• keen
• nerveless
• nimble
• prompt
• quick
• ready
• relaxed
• rock-steady
• sharp
• sleepless
• smart
• steady
• unabashed
• unawed
• undaunted
• undismayed
• unfaltering
• unflinching
• unintimidated
• unshaken
• unshrinking
• unsleeping
• unstrained
• unwavering
• wakeful
• wide-awake