Kangaroo word a word that contains its antonym; for example: "covert" carries "overt", "animosity" carries "amity". Some compilers require that the letters of the joey word not be consecutive within the kangaroo word, or that the kangaroo and joey words must be etymologically unrelated. Kangaroo words were originally popularized as a word game by Ben O'Dell in an article for "The American Magazine", volume 151, during the 1950s. This was later reprinted in "the Reader's Digest". Kangaroo word A kangaroo word is a word that contains letters of another word, in order, with the same meaning. For example: the word "masculine" contains
Reserved word as a user-defined name. The meaning of keywords — and, indeed, the meaning of the notion of "keyword" — differs widely from language to language. Concretely, in ALGOL 68, keywords are stropped (in the strict language, written in bold) and are not reserved words – the unstropped word can be used as an ordinary identifier. The "Java Language Specification" uses the term "keyword". The ISO 9899 standard for the C programming language uses the term "keyword". In many languages, such as C and similar environments like C++, a "keyword" is a reserved word which identifies a syntactic form. Words used