Wakeless comes from wake (Old English wacan 'to awake', from Proto-Germanic *wakaną) plus the privative suffix -less. In current use it is an adjective meaning "without waking; from which one does not awaken, as in deep or final sleep". That sense is explained by the older material without requiring a speculative semantic step: the inherited or borrowed base supplies the field of meaning, while the English formation fixes its modern role. The suffix -less marks lack, absence, or deprivation. The surface form is compositional: its joined elements remain visible in the modern word. The historical chain includes Old English wacan and Proto-Germanic *wakaną. Related English forms include wake, waken, and wakeful. As a result, the modern word is best read as a negative, privative, or reversative formation built on a historically older base.