Some antonyms (verbs)

to be absent; to take a day off; to have a break

to work; to labor

to get off; to disembark

to get on (train, plane, bus, ship, etc.); to board

to open

to close; to shut

to move

to stop; to come to a stop

to leave; to exit; to go out

to enter; to go into

to get up; to wake up

to lie down; to sleep (lying down); to go to bed

to stand; to rise; to stand up

to sit; to squat

to bend; to crook; to curve

to lengthen; to extend; to reach out

to go; to head (towards)

to come (spatially or temporally); to arrive

to return; to come home

to put on (or wear) lower-body clothing (i.e. pants, skirt, footwear, etc.)

to wear (clothes); to put on

to take off (clothes, shoes,etc.); to undress