Tayyib
\r\n Al-Maida (The Table Spread) Chapter 5: Verse 88 (partial)
"Eat of what God has provided you as a lawful (halal) and good (tayyib)."
Tayyib is an adjective, the most basic semantic function of which is to denote any quality that strikes the sense - the sense of taste and odour, in particular - as very delightful, pleasant, and sweet. As would be expected, it is most frequently used to qualify food, water, perfume, and the like.
\r\nIt is noteworthy that in the case of food, which, as everybody knows, constitutes an important item among those things that tend to be surrounded by all sorts of taboos, the Quran brings in the specific idea of 'sanctification', by associating tayyib with halal which means 'lawful' in the sense of 'free from all taboo'. So in this particular sense tayyib becomes almost a synonym of halal.
\r\nCompiled From:
\r\n \"Ethico Religious Concepts in the Quran\" - Toshihiko Izutsu, p. 235