To sing or utter in falsetto.

(transitive) To alter so as to make false; to make incorrect. / (transitive) To misrepresent. / (transitive) To prove to be false. / (transitive) To counterfeit; to forge.

(sports) The act of an athlete starting a race before being signaled to do so. / (American football) The act of an offensive player moving across the line of scrimmage prior to the snap.

(pseudoscience) A condition in which a person's identity and relationships are affected by memories which are factually incorrect but strongly believed.

Alternative spelling of false memory syndrome

A result of a test that shows as absent something that is present. / (statistics) A type II error (“accepting the null hypothesis when it is false”).

A result of a test that shows as present something that is absent. / (statistics) type I error

(fencing) An attack that is intended to miss or fall short, so as to produce a reaction from the opponent. Also called a false action.

The chaffweed (Centunculus minimus). / A type of figwort (Lindernia dubia), found in wet or muddy places.

(engineering) A temporary framework used in the building of bridges and arched structures in order to hold items in place until the structure is able to support itself.