[1]
فَسَدَ , aor.
فَسُدَ , (S, M, A, O, L, Msb, K, &c.,)
which is the aor. commonly known, (TA,) and
فَسِدَ ,
(IDrd, M, O, L, K,) which is of weak authority;
(IDrd, O, TA;) and فَسُدَ, aor.
فَسُدَ ; (S, M, O, L,
K;) inf. n. فَسَادٌ (S. M, A, O, L, K) and فُسُودٌ,
(M, O, L, K,) the former being inf. n. of فَسَدَ,
aor.
فَسُدَ , (S, A, O,) and so the latter, and the former
being also inf. n. of فَسُدَ, (O,) or the former is of
فَسُدَ and the latter is of فَسَدَ, (TA,) or the former
is a simple subst., and the latter is the inf. n.;
(Msb;) It (a thing, S, A, O) [and he (a man)]
was, or became, bad, evil, corrupt, unsound, wrong,
wrongful, improper, unrighteous, wicked, vitious,
depraved, or dishonest; devoid of virtue, or efficacy; in a corrupted, vitiated, perverted, marred,
spoiled, injured, impaired, deteriorated, tainted,
or infected, state; in a state of disorder or disturbance, destruction, annihilation, consumption,
waste, or ruin; (MA, KL, PS, &c.;) and so
↓ استفسد: (KL:) contr. of صَلَحَ: (M, * L, K:)
it became altered in its state [for the worse]: and
it became null, void, of no force, or of no account;
or it came to nought, or perished; accord. to the
explanation by most of the expositors of the ex.
in the Kur xxi. 22. (MF.)