The best Modern Standard Arabic dictionaries

The lookup most Arabic speakers and advanced learners actually use: it pulls together Lisan al-Arab and other classical dictionaries alongside modern bilingual entries, with roots, conjugations and idioms. Monolingual definitions make it the natural step up when English glosses stop being precise enough. The site is ad-heavy, the interface is cluttered, and it covers formal Arabic only — dialect words will not be there.

Search a word and see how it is used in Classical Arabic and across Egyptian, Levantine, North African, Gulf, Iraqi, Sudanese and Yemeni, with roots, plurals, pronunciation notes and example sentences — something no other free resource comes close to. Essential once you start reading or listening to real dialect material. The web dictionaries are free (a paid Lughatuna app adds offline access), and coverage is much thicker for Egyptian and Levantine than for the others.

A free root-based interface to page scans of the major Arabic dictionaries — Hans Wehr, Lane's Lexicon, Steingass and more — which is how serious readers of classical and literary Arabic look words up. Indispensable if you are reading Qur'anic, poetic or pre-modern prose. It assumes you can derive the root yourself and read dictionary conventions, so it is useless as a beginner tool, and the scanned-page interface feels ancient.