For a lifetime Kees Versteegh played a leading role in Arabic linguistics, dialects (diglossia, creolization, pidginization), the history of Arabic grammar, and other fields related to Arabic. From among his global contacts, colleagues contributed to a Liber Amicorum in appreciation of his stimulating efforts to reopen, deepen and complete our knowledge of Arabic Grammar and Linguistics.In three sections, History, Linguistics and Dialects, 27 contributors discuss (alphabetically): bilingual verb construction; contractual language; current developments; language description; language use; lexicology; organization of language; pause; sentence types; and specific topics: ?alladi; featuring; government; homonymy; ?idmar; inflection; masdar; the origin of grammatical tradition; variety conflicts; and verbal schematic (ir)regularities; waqf; and zarf.