awkwardyoudaoicibaDictYouDict
awkward: [14] When awkward was coined, in Scotland and northern England, it meant ‘turned in the wrong direction’. Middle English had an adjective awk, which meant ‘the wrong way round, backhanded’, and hence ‘perverse’, and with the addition of the suffix -ward this became awkward. Awk itself was adopted from Old Norse afugr, which is related to German ab ‘away’ and English off. Awkward followed a similar semantic path to awk, via ‘perverse, illadapted’ to ‘clumsy’.
=> off
urbanyoudaoicibaDictYouDict
urban: [17] Urban comes from Latin urbānus, a derivative of urbs ‘city’ (a word of unknown origin). It was preceded into English by urbane [16], which is essentially the same word, but came via Old French urbaine. It was originally used as urban is now, but after urban arrived it gradually took the metaphorical path to ‘smooth, sophisticated’. The derivatives suburb and suburban date from the 14th and 17th centuries respectively; and suburbia was coined in the 1890s.
=> suburban, urbane
literally (adv.)youdaoicibaDictYouDict
1530s, "in a literal sense," from literal + -ly (2). Erroneously used in reference to metaphors, hyperbole, etc., even by writers like Dryden and Pope, to indicate "what follows must be taken in the strongest admissible sense" (1680s), which is opposite to the word's real meaning and a long step down the path to the modern misuse of it.
We have come to such a pass with this emphasizer that where the truth would require us to insert with a strong expression 'not literally, of course, but in a manner of speaking', we do not hesitate to insert the very word we ought to be at pains to repudiate; ... such false coin makes honest traffic in words impossible. [Fowler, 1924]
treadmill (n.)youdaoicibaDictYouDict
invented (and named) 1822; originally an instrument of prison discipline; from tread (v.) + mill (n.1). Treadwheel as a similar method of driving machinery is from 1570s.
As a corrective punishment, the discipline of the stepping mill has had a most salutary effect upon the prisoners, and is not likely to be easily forgotten, while it is an occupation which by no means interferes with, nor is calculated to lessen the value of, those branches of prison regulation which provide for the moral and religious improvement of the criminal. ["Description of the Tread Mill Invented by Mr. William Cubitt of Ipswich for the Employment of Prisoners," London, 1822]
By later generations regarded as a path to physical fitness.