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Webster 1913 Edition

Adj.

[From

Vast; immense.

[R.]

I can call spirits from the

vasty

deep.

Shakespeare

Adj.

Being of great extent; very spacious.

I can call spirits from the vasty deep. [Little used.]

vasty ‎(comparative vastier, superlative vastiest)

vast
- 1598, William Shakespeare, Henry IV, Part 1, III.i
  I can call spirits from the vasty deep.
- 1919, W. Somerset Maugham, The Moon and Sixpence, ch. 7
  [...] the pattern of life it offers has a homely grace. It reminds you of a placid rivulet, meandering smoothly through green pastures and shaded by pleasant trees, till at last it falls into the vasty sea; [...]