Answer:

nods

Answer	Crossword Clue
NODS	Assents, in a way
NODS	Signals agreement
NODS	Indicates assent

NODS	Signals "yes"
NODS	Indicates agreement, non-verbally
NODS	Silent yeses
NODS	Indicates agreement
NODS	Gives assent
NODS	Signals silently
NODS	Becomes inattentive
NODS	Affirmative actions

NODS	Agrees tacitly
NODS	Starts to drop off
NODS	Silent auction bids?
NODS	Sleeps sitting up
NODS	Some bids
NODS	Quiet bids
NODS	Silent assents
NODS	Shows silent support

NODS	Dozes off
NODS	Drops off
NODS	Head-shaking answers
NODS	OKs you can't hear
NODS	Reacts to a long speech, maybe
NODS	Snoozes
NODS	Some okays
NODS	Award nominations, e.g.

NODS	Misses part of the lecture, perhaps
NODS	Unspoken okays
NODS	Misses some of the lecture, perhaps
NODS	Okays with a head bob
NODS	Starts to doze
NODS	Approves quietly
NODS	Dozes
NODS	Auction actions

NODS	Motions "yes"
NODS	Signs of approval
NODS	Drifts off
NODS	Signals the auctioneer
NODS	Acknowledges silently