a. Obs. [UN-1 7 b.] Unbelievable, incredible.
1382. Wyclif, Judg. xx. 5. My wijf traueylynge with vntrowable woodnes of lust. Ibid., Esther ii. 15. She was ful semeli, and with vntrouable fairnesse.
c. 1475. Cath. Angl., 394/1 (A.). Vn Trowabylle, incredibilis, incredulus.
1533. Bellenden, Livy, IV. xiv. (S.T.S.), II. 99. Þe samyn is na les difficill þan vntrowabil.
1552. Lyndesay, Monarche, 2760. Nynus rasit vp one gret arme , Quhose nummer bene vntrowabyll.