i Register
In some senses, doorknob is marked as derogatory, informal. Watch for register when choosing this word.
ADJ.
dark, left, roundish, same, turned, turned
VERB + DOORKNOB
don't, found, fumbled, groped, hand, reached, touch, tried
DOORKNOB + NOUN
room, tom's
PREP.
in, off, off, on, with, with
ADV.
quietly, slowly