a. [ Compar. Falser superl. Falsest. ] [ L. falsus, p. p. of fallere to deceive; cf. OF. faus, fals, F. faux, and AS. fals fraud. See Fail, Fall. ] 1. Uttering falsehood; unveracious; given to deceit; dishnest; as, a false witness. [ 1913 Webster ]

2. Not faithful or loyal, as to obligations, allegiance, vows, etc.; untrue; treacherous; perfidious; as, a false friend, lover, or subject; false to promises. [ 1913 Webster ]

I to myself was false, ere thou to me. Milton. [ 1913 Webster ]

3. Not according with truth or reality; not true; fitted or likely to deceive or disappoint; as, a false statement. [ 1913 Webster ]

4. Not genuine or real; assumed or designed to deceive; counterfeit; hypocritical; as, false tears; false modesty; false colors; false jewelry. [ 1913 Webster ]

False face must hide what the false heart doth know. Shak. [ 1913 Webster ]

5. Not well founded; not firm or trustworthy; erroneous; as, a false claim; a false conclusion; a false construction in grammar. [ 1913 Webster ]

Whose false foundation waves have swept away. Spenser. [ 1913 Webster ]

6. Not essential or permanent, as parts of a structure which are temporary or supplemental. [ 1913 Webster ]

7. (Mus.) Not in tune. [ 1913 Webster ]

False arch (Arch.), a member having the appearance of an arch, though not of arch construction. --
False attic, an architectural erection above the main cornice, concealing a roof, but not having windows or inclosing rooms. --
False bearing, any bearing which is not directly upon a vertical support; thus, the weight carried by a corbel has a false bearing. --
False cadence, an imperfect or interrupted cadence. --
False conception (Med.), an abnormal conception in which a mole, or misshapen fleshy mass, is produced instead of a properly organized fetus. --
False croup (Med.), a spasmodic affection of the larynx attended with the symptoms of membranous croup, but unassociated with the deposit of a fibrinous membrane. --
False door or
False window (Arch.), the representation of a door or window, inserted to complete a series of doors or windows or to give symmetry. --
False fire, a combustible carried by vessels of war, chiefly for signaling, but sometimes burned for the purpose of deceiving an enemy; also, a light on shore for decoying a vessel to destruction. --
False galena. See Blende. --
False imprisonment (Law), the arrest and imprisonment of a person without warrant or cause, or contrary to law; or the unlawful detaining of a person in custody. --
False keel (Naut.), the timber below the main keel, used to serve both as a protection and to increase the shio's lateral resistance. --
False key, a picklock. --
False leg. (Zool.) See Proleg. --
False membrane (Med.), the fibrinous deposit formed in croup and diphtheria, and resembling in appearance an animal membrane. --
False papers (Naut.), documents carried by a ship giving false representations respecting her cargo, destination, etc., for the purpose of deceiving. --
False passage (Surg.), an unnatural passage leading off from a natural canal, such as the urethra, and produced usually by the unskillful introduction of instruments. --
False personation (Law), the intentional false assumption of the name and personality of another. --
False pretenses (Law), false representations concerning past or present facts and events, for the purpose of defrauding another. --
False rail (Naut.), a thin piece of timber placed on top of the head rail to strengthen it. --
False relation (Mus.), a progression in harmony, in which a certain note in a chord appears in the next chord prefixed by a flat or sharp. --
False return (Law), an untrue return made to a process by the officer to whom it was delivered for execution. --
False ribs (Anat.), the asternal rebs, of which there are five pairs in man. --
False roof (Arch.), the space between the upper ceiling and the roof. Oxford Gloss. --
False token, a false mark or other symbol, used for fraudulent purposes. --
False scorpion (Zool.), any arachnid of the genus Chelifer. See Book scorpion. --
False tack (Naut.), a coming up into the wind and filling away again on the same tack. --
False vampire (Zool.), the Vampyrus spectrum of South America, formerly erroneously supposed to have blood-sucking habits; -- called also vampire, and ghost vampire. The genuine blood-sucking bats belong to the genera Desmodus and Diphylla. See Vampire. --
False window. (Arch.) See False door, above. --
False wing. (Zool.) See Alula, and Bastard wing, under Bastard. --
False works (Civil Engin.), construction works to facilitate the erection of the main work, as scaffolding, bridge centering, etc. [ 1913 Webster ]

adv. Not truly; not honestly; falsely. “You play me false.” Shak. [ 1913 Webster ]

v. t. [ L. falsare to falsify, fr. falsus: cf. F. fausser. See False, a. ] 1. To report falsely; to falsify. [ Obs. ] Chaucer. [ 1913 Webster ]

2. To betray; to falsify. [ Obs. ] [ 1913 Webster ]

[ He ] hath his truthe falsed in this wise. Chaucer. [ 1913 Webster ]

3. To mislead by want of truth; to deceive. [ Obs. ] [ 1913 Webster ]

In his falsed fancy. Spenser. [ 1913 Webster ]

4. To feign; to pretend to make. [ Obs. ] “And falsed oft his blows.” Spenser. [ 1913 Webster ]

a. Hypocritical. Shak. [ 1913 Webster ]

a. False-hearted. Shak. [ 1913 Webster ]

a. Hollow or unsound at the core; treacherous; deceitful; perfidious. Bacon. -- False"-heart`ed*ness, n. Bp. Stillingfleet. [1913 Webster]

n. [ False + -hood ] 1. Want of truth or accuracy; an untrue assertion or representation; error; misrepresentation; falsity. [ 1913 Webster ]

Though it be a lie in the clock, it is but a falsehood in the hand of the dial when pointing at a wrong hour, if rightly following the direction of the wheel which moveth it. Fuller. [ 1913 Webster ]

2. A deliberate intentional assertion of what is known to be untrue; a departure from moral integrity; a lie. [ 1913 Webster ]

3. Treachery; deceit; perfidy; unfaithfulness. [ 1913 Webster ]

Betrayed by falsehood of his guard. Shak. [ 1913 Webster ]

4. A counterfeit; a false appearance; an imposture. [ 1913 Webster ]

For his molten image is falsehood. Jer. x. 14. [ 1913 Webster ]

No falsehood can endure
Touch of celestial temper. Milton.

Syn. -- Falsity; lie; untruth; fiction; fabrication. See Falsity. [ 1913 Webster ]

adv. In a false manner; erroneously; not truly; perfidiously or treacherously. “O falsely, falsely murdered.” Shak. [ 1913 Webster ]

Oppositions of science, falsely so called. 1 Tim. vi. 20. [ 1913 Webster ]

Will ye steal, murder . . . and swear falsely ? Jer. vii. 9. [ 1913 Webster ]

n. The state of being false; contrariety to the fact; inaccuracy; want of integrity or uprightness; double dealing; unfaithfulness; treachery; perfidy; as, the falseness of a report, a drawing, or a singer's notes; the falseness of a man, or of his word. [ 1913 Webster ]

n. A deceiver. [ Obs. ] Spenser. [ 1913 Webster ]

n.; pl. Falsettos [ It. falsetto, dim. fr. L. falsus. See False. ] A false or artificial voice; that voice in a man which lies above his natural voice; the male counter tenor or alto voice. See Head voice, under Voice. [ 1913 Webster ]