ppl. a. [UN-1 8.] Not provided with a brother. Also fig.

1

1798.  Monthly Mag., VI. 454. He from Thrugelmer descends, Aurgelmer’s unbrother’d son.

2

1853.  Miss E. S. Sheppard, Ch. Auchester, III. 194. The perfect form, the distinct conception of this unbrothered work.

3