(transitive) To fit with a counterweight.

(law) A second signature added to a document to affirm the validity of the signature of the first person. / The response to a sign or signal.

(transitive) To sign on the opposite side of (a document). / (transitive, by extension) To add a second signature to a document, affirming the validity of the signature of another person.

present participle of counteract

(dated) The topmost covering of a bed, often functioning as a blanket; a coverlet, bedspread.

Any action taken to counteract or correct another. / (military, chiefly in the plural) Any of the devices and techniques used to impair the operational effectiveness of an enemy.

simple past tense and past participle of counteract

counterespionage

the part of a cheque that is retained in the chequebook as a record; a stub

A person who counterfeits