لقس1 لَقِسَتْ نَفْسُهُ, (S, A, K,) aor. ـَ (S, K,) inf. n. لَقَسٌ, (S, TA,) His soul [or stomach] heaved; or became agitated by a tendency to vomit; or became heavy; syn. غَثَتْ, [q. v.,] (S, A, K,) and خَبُثَتْ; (S, K;) مِنَ الشَّىْءِ in consequence of the thing. (S, K.) Mohammad desired his followers to use this expression instead of خَبُثَتْ نَفْسُهُ, which he disliked. (K, TA.) b2: With إِلى الشَّىْءِ following it, His soul strove with him to incline him to the thing, (K,) and became greedy for it. (TA.) [But Az seems to disapprove of this explanation.]لَقِسَةٌ, as an epithet applied to نَفْسٌ, is the part. n. of لَقِسَتْ in the [first and] second of the senses explained above. (TA.)