Clauson (1972)
An etimological dictionary of pre-thirteenth-century Turkish
p. 283
D uzak
N./A.S. fr. uza:-; ‘long drawn out, long lasting’; hence, through such phr. as ‘a long journey’, ‘far away, distant, remote’. S.i.a.m.l.g. Uyğ. viii ff. Civ. iglig erse uzak bolur ‘if he is ill, it becomes a long drawn out affair’ TT VII 28, 21 etc.: Xak. xi al-amr iḏā ṭāla ‘a long drawn out affair’ is called uzak ı:ş; hence one says yala:waç uzak bardı: abṭa’a’l-mursal ‘the envoy has been gone a long time’ Kaş. I 66; igledim andın uza:k (sic) ‘I was ill a long time’ (ṭawīla(n)) ‘because of it’ I 380, 16: xiii(?) Tef. uzak (you should not sleep) ‘for a long time’ 322: xiv Muh.(?) Rif. 109 (at-): Çağ. xv ff. uzak dür wa ba‘īd ‘far away, distant’ San. 73v. 18: Osm. xv uzak ‘long’ of time or space in two phr. TTS II 944; IV 797.