Prodigious

Pro*di"gious (?), a. [L. prodigiosus, fr. prodigium a prodigy; cf. F. prodigieux. See Prodigy.]

1. Of the nature of a prodigy; marvelous; wonderful; portentous. [Obs. or R.] Spenser.

It is prodigious to have thunder in a clear sky.
Sir T. Browne.

2. Extraordinary in bulk, extent, quantity, or degree; very great; vast; huge; immense; as, a prodigious mountain; a prodigious creature; a prodigious blunder. "Prodigious might." Milton.

Syn. -- Huge; enormous; monstrous; portentous; marvelous; amazing; astonishing; extraordinary.