(obsolete) To take off (clothing). / (slang) To kill, to bump off

Used to indicate that somebody does not wish to be disturbed, e.g. a sign on a hotel room door, or a "busy" mode of an instant messenger.

(euphemistic) To have sex. / Used other than figuratively or idiomatically: to do a given deed.

Indicates that an area should not be entered, e.g. a military installation, or as a sign on a hotel room door.

Third-person singular simple present indicative form of make do

(colloquial, humorous) Used to indicate an unusual or unexpected situation.

present participle of make do

(linguistics) The use of the auxiliary verb "do" in negative or interrogative English sentences that do not contain other auxiliaries.

simple past tense and past participle of make do

plural of do-goodery