alertly

/əˈlɜrtli/
adverb
  1. In a watchful, attentive, or quick-to-respond manner.
    • She looked alertly around the room before entering.
    • The driver drove alertly through the foggy night.
    • The dog sat alertly at the gate, listening for footsteps.
Antonyms
What does "alertly" mean? | whatsthatwordmean | whatsthatwordmean