a. (UN-1 7 b.)
1627. Hakewill, Apol. (1630), 288. It is unimpareable like the light of the sunne.
1647. Clarendon, Contempl. Ps., Tracts (1727), 504. From that unimpairable stock of thy mercies blot out our offences.
1653. H. More, Conject. Cabbal. (1713), 175. It being the lowest degree and shadow of Being; and not only immoveable, but undiminishable and unimpairable.