belive (v.)youdaoicibaDictYouDict
Old English belifan "remain," intransitive form of belæfan "cause to remain" (see beleave). A general Germanic word (cognates: Gothic beleiban, Old High German biliban, German bleiben, Dutch blijven); confused in early Middle English with beleave and merged into it, which gave beleave two clashing senses ("to leave," also "to remain") which might be why the compound word, the cognate of important verbs in other Germanic languages, was abandoned in English and only leave (v.) remains.
clash (v.)youdaoicibaDictYouDict
c. 1500, "to make a loud, sharp sound," of imitative origin, or a blend of clap and crash. Compare Dutch kletsen "splash, clash," German klatschen, Danish klaske "clash, knock about." Figurative sense, in reference to non-physical strife or battle, is first attested 1620s. Of things, "to come into collision," from 1650s; of colors, "to go badly together," first recorded 1894. Related: Clashed; clashing.
dadayoudaoicibaDictYouDict
1920, from French dada "hobbyhorse," child's nonsense word, selected 1916 by Romanian poet Tristan Tzara (1896-1963), leader of the movement, for its resemblance to meaningless babble.
Freedom: DADA DADA DADA, the howl of clashing colors, the intertwining of all contradictions, grotesqueries, trivialities: LIFE. [T. Tzara, "Dada Manifesto," 1918]
Related: Dadaist; Dadaism.