The “ġāwş” (a “secret language” of El-Jadida, Morocco) has not been thoroughly investigated. In this book, scrutiny is on the major mechanisms of the “language”. Focus is on the overall details that show the multi-faceted manipulations of single words, phrases, clauses and sentences (of all types and lengths), taking into account the important idiosyncratic aspects of the Moroccan Arabic variety of El-Jadida, with its rather longer vowels, among other things. The “secret language” works on the modifications of the word-to-encode through a major, and rather context-bound, “pseudo-infixation” of a disguise item that blurs all the common linguistic boundaries in relation to syllables, affixes, particles, clitics, words, phrases, clauses, sentences and even discourse fragments.