ppl. a. (UN-1 8.)

1

[1775.  Ash.]

2

1784.  Monthly Rev., LXXI. 230. It is matter of much concern to observe, that schemes which are suggested for the general benefit of mankind, should owe their origin to chimerical speculation, or to speculative ideas unsubstantiated by practical knowledge.

3

1837.  Ht. Martineau, Soc. Amer., II. 139. An unsubstantiated rumour of his having been seen conversing with slaves.

4

1856.  Froude, Hist. Eng., II. 46. Wolsey … set aside these unsubstantiated rumours.

5