فَاكٌّ

[as an act. particle n., Separating, &c.

And] (assumed tropical:) Extremely aged, or old and weak; applied in this sense to a man; (AZ, S, O, K;) and also to a camel: (K:) or, applied to a camel, disabled, or fatigued, by leanness, or emaciation: feminine with ة. (En-Nadr, TA.)

And (tropical:) Foolish, or stupid: (S, O: *) or very foolish, or stupid: (IAar, K, TA:) and you say فَاكٌّ تَاكٌّ, (IAar, S, O, TA,) making تاكّ an imitative sequent: or, according to Yaakoob, you say شَيْخٌ فَاكٌّ وَتَاكٌّ: thus he makes تاكّ a substitute, not an imitative sequent. (TA.) And أَحْمَقُ فَاكٌّ وَهَاكٌّ (tropical:) [A foolish, or stupid, person,] one who talks of that which he knows and of that which he knows not, and is more, or oftener, incorrect than correct. (El-Hoseybee, TA.) Pl. فَكَكَةٌ and فِكَاكٌ. (IAar, K.)