لهف1 لَهِفَ عَلَيْهِ, (inf. n. لَهْفٌ, S,) and ↓ تَلَهَّفَ, He grieved for it, or at it; regretted it; syn. جَزِنَ and تَحَسَّرَ; (S, K;) meaning a thing that had escaped him after he been at the point of attaining it: (JK, TA:) or he grieved for it, or at it; or regretted it; and was angry, or enraged, on account of it. (TA.) But see تَحَسَّرَ; and see S, voce أَسِفَ. b2:  تلهّف signifies He felt, or expressed, grief, sorrow, or regret.5 تَلَهَّفَ see 1.يَا لَهْفَ O the grief! see an ex. in art. خطأ, conj. 4.لَهْفَةٌ Greediness; voracity; eagerness.مَلْهُوفٌ Greedy; ravenous; eager; عَلَى or إِلَى for a thing.