One of two options on a true-or-false test.

Untrue, not factual, factually incorrect. / Based on factually incorrect premises. / Spurious, artificial. / Uttering falsehood; dishonest or deceitful.

In a dishonest and disloyal way; falsely.

(electronics, telecommunications, of a decoder) To incorrectly decode noise as if it were a valid signal. / (obsolete) To violate, to betray (a promise, an agreement, one’s faith, etc.).

(electronics) one of two states of a Boolean variable; logic 0.

The characteristic of being false.

In a false manner.

plural of falseness

(obsolete) Feigned, fake.

simple past tense and past participle of false