tireless (adj.)youdaoicibaDictYouDict[tireless 词源字典]
1590s, "indefatigable," from tire (v.) + -less. From 1862 in the sense "without a tire," from tire (n.). Related: Tirelessly.[tireless etymology, tireless origin, 英语词源]
wireless (adj.)youdaoicibaDictYouDict
1894, in reference to as a type of telegraph, from wire (n.) + -less. As a noun, "radio broadcasting," attested from 1903, subsequently superseded by radio.