فكر1 فَكَرَ فِيهِ, (O, * Msb, K,) aor. ـُ (O, TK,) or ـِ (Msb,) inf. n. فَكْرٌ; (S, O, Msb, K; *) and ↓ أَفْكَرَ; (S, O, Msb, K;) and ↓ فكّر, (S, O, K,) [which is more common than either of the first and second,] inf. n. تَفْكِيرٌ; (O, TA;) and ↓ تفكّر; (S, O, Msb, K;) and ↓ افتكر, (Msb, TA,) but this last is vulgar; (TA;) He thought upon it, considered it, or examined it [mentally]; (Msb;) he considered it in order to obtain a clear knowledge of it; (S, O, * TA;) he employed his mind, (M, TA,) or his consideration, (K, TA,) upon it. (M, K, TA.) [See also فِكْرٌ.]2 فَكَّرَ 4, 5, and 8: see the preceding paragraph.فَكْرٌ inf. n. of 1 [q. v.]. b2:  لَيْسَ لِى فِى هٰذَا الأَمْرِ فَكْرٌ, (Yaakoob, S, O, K, *) which is more chaste than ↓ فِكْرٌ, [in this case,] (Yaakoob, S, O,) but the latter is sometimes used, (K,) means I have no want, or need, of this thing: (Yaakoob, S, O, K: *) or, as is said in the A, لَا فَكْرَ لِى فِى هٰذَا i. e. I have no want, or need, of this, nor do I care for it. (TA.) فِكْرٌ and ↓ فِكْرَةٌ (S, O, Msb, K) and ↓ فِكْرَى, (Lth, O, K,) are simple substs., (S, O, Msb, *) but the last is of rare occurrence, (Lth, O,) signifying Thought, consideration, or [mental] examination, فِى أَمْرٍ [respecting a thing]; (Msb;) consideration [of a thing] in order to obtain a clear knowledge [of it]; (S, TA;) the employment of the mind, (M, TA,) or of the consideration, (K, TA,) upon a thing: (M, K, TA:) or repeated consideration for the purpose of seeking [to discover] meanings: or the arranging of things in the mind in order, by them, to arrive at some object of which the attainment is desired, though it be but a preponderating opinion: (Msb:) or the arranging of known things [in the mind] in order to attain to [the knowledge of] an unknown [thing]: (KT:) pl. of the first أَفْكَارٌ: (IDrd, K;) but Sb says that neither فِكْرٌ nor عِلْمٌ nor نَظَرٌ has  any pl.: (TA:) the pl. of ↓ فِكْرَةٌ is فِكَرٌ. (Msb.) One says, لِفُلَانٍ فِكَرٌ كُلُّهَا فِقَرٌ [Such a one has thoughts all of which are points of wit]. (A, TA.) A2:  See also فَكْرٌ.فِكْرَةٌ: see the next preceding paragraph; the former in two places.فِكْرَى: see the next preceding paragraph; the former in two places.فِكِّيرٌ [Thoughtful;] having much فِكْر; (IF, S, O, K;) as also ↓ فَيْكَرٌ. (Kr, K.) فَيْكَرٌ: see what next precedes.