فجأ1 فَجِئَهُ, (S, Mgh, O, Msb, K,) and فَجَأَهُ, (S, O, Msb, K,) the former of which is the more chaste, (TA,) aor. ـَ (Mgh, Msb, K,) inf. n. ↓ فُجَآءَةٌ, (S, O, K,) or this is a simple subst., (Msb,) and فَجْءٌ, (K, TA,) or ↓ فَجْأَةٌ, (so accord. to the CK, and Ham p. 44,) or this last also is a simple subst.; (Msb;) and ↓ فاجأهُ, (S, Mgh, O, Msb, K,) inf. n. مُفَاجَأَةٌ (S, O, Msb) and فِجَآءٌ; (S, O;) and ↓ افتجأهُ; (K;) It (an affair, or event, S, O, Msb) came upon him, or happened to him, suddenly, or at unawares, (Mgh, K, TA,) unexpectedly, (Mgh,) without his having knowledge of it, (Mgh, TA,) or without any previous cause; (TA;) or hastily; syn. عَاجَلَهُ: (Msb:) [it surprised him; or took him by surprise:] and [in like manner] one says, فَجِئْتُ الرَّجُلَ, and فَجَأْتُهُ, meaning I came upon the man suddenly, or at unawares. (Msb.) b2:  And فَجَأَ المَرْأَةَ, (O, K,) aor. ـَ inf. n. فَجْءٌ, (TA,) He compressed the woman. (O, K. *) A2:  فَجِئَتِ النَّاقَةُ, (IAmb, O, K,) aor. ـَ (K,) inf. n. فَجَأٌ, (IAmb, O,) The she-camel became big in her belly. (IAmb, O, K.) b2:  And فَجَأَ is said in the A to be syn. with زَادَ [It increased, &c.]. (TA.) 3 فَاْجَاَ see above, first sentence. b2:  [Hence,] فُوجِئَ He was taken away by a sudden death; he died suddenly. (S in art. فوت.) 4 افجأ He found, or lighted on, [or surprised,] his friend doing a disgraceful thing. (IAar, TA.) 8 إِفْتَجَاَ see 1, first sentence.فَجْأَةٌ: see 1, first sentence: b2:  and see also what here follows.فُجَآءَةٌ: see 1, first sentence. b2:  Also A sudden, or an unexpected, event; a thing that comes upon one suddenly, or at unawares. (K, TA.) Hence, مَوْتُ الفُجَآءَةِ [Sudden death]: written by some ↓ الفَجْأَةِ, as an inf. n. of unity. (TA.) المُفَاجِئُ The lion. (Sgh, in his tract on the names of the lion; and K.)