Fiqh al-Lughah wa Sirrul-'Arabiyah - Abu Mansur ath-Tha'alibi

This work is a reference in "dictionaries" in Arabic, written by a leading expert of Arabic Language, imam Abu Mansour ath-Tha'aalini (429H). The purpose and interest of this important book is to clarify and give the exact definitions and shades for words with the same meaning, but the intensity, tone or use may vary in reality. It is also sometimes to be complete on the lexical fields of a specific theme.