falling stone. meteorite, aërolite.
falling to pieces. disintegration, dilapidation.--a. [ramshackle], [dilapidated], disintegrating.
fall off. [drop]; [withdraw], [separate]; apostatize, [backslide]; depreciate, [deteriorate].
fall on. [attack], [assault], [assail].
fall out. See quarrel.
fallow, a. [uncultivated], untilled; [dormant], [inactive].
fall short. be [deficient], be [inadequate].
fall to pieces. disintegrate.
false, a. [spurious], forged, [counterfeit], [sham], supposititious, [unauthentic], [bogus], [feigned], [fallacious], [make believe], [hypocritical], [assumed], pseudo, [sophistical], untenable; unveracious, [dishonest], [erroneous], [untruthful]; [disloyal], [perfidious], [traitorous], disingenuous, [insincere], [recreant], [faithless], [unfaithful].
false friend. traitor, [betrayer], [Judas].