Be on synonyms | adjectives

Synonyms for Be on as an Adjective

• watchful

  attentive
• cautious

  attentive
• respectful

  attentive
• wary

  attentive
• observant

  attentive
• conscious
• apprehensive
• conversant
• cognizant
• knowledgeable
• vigilant
• solicitous
• careful
• alert
• au courant
• cagey
• chary
• conscientious
• heedful
• knowing
• observing
• on the ball
• regardful
• sensible
• thoughtful
• alive to
• be up on
• in the know
• know all the answers
• observative
• on the job
• on to
• plugged in
• tuned in
• with eyes peeled
• attentive
• aware