Prodigal vs. Prodigious

Prodigal and Prodigious Definitions
Prodigal
Rashly or wastefully extravagant
Prodigal expenditures on unneeded weaponry.
A prodigal nephew who squandered his inheritance.
Prodigious
Impressively great in size, force, or extent; enormous
A prodigious storm.
Prodigal
Giving or given in abundance; lavish or profuse
"the infinite number of organic beings with which the sea of the tropics, so prodigal of life, teems" (Charles Darwin).
Prodigious
Extraordinary; marvelous
A prodigious talent.
Prodigal
One who is given to wasteful luxury or extravagance.
Prodigious
(Obsolete) Portentous; ominous.
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Prodigal
Wastefully extravagant.
He found himself guilty of prodigal spending during the holidays.
The prodigal son spent his share of his inheritance until he was destitute.
Prodigious
Very big in size or quantity; colossal, gigantic, huge.
Prodigal
Yielding profusely, lavish.
She was a merry person, glad and prodigal of smiles.
How can he be so prodigal with money on such a tight budget?
Prodigious
Extraordinarily amazing or exciting.
Prodigal
Profuse, lavishly abundant.
Prodigious
Freakish; monstrous.
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Prodigal
(by allusion to the New Testament story commonly called "The Parable of the Prodigal Son", [http://www.biblegateway.com/passage/?search=Luke+15:11–32 Luke 15:11–32]) Behaving as a prodigal son:
Prodigious
(obsolete) Ominous, portentous.
Prodigal
Having (selfishly) abandoned a person, group, or ideal.
Prodigious
Of the nature of a prodigy; marvelous; wonderful; portentous.
It is prodigious to have thunder in a clear sky.
Prodigal
Returning or having returned, especially repentantly, after such an abandonment.
Prodigious
Extraordinary in bulk, extent, quantity, or degree; very great; vast; huge; immense; as, a prodigious mountain; a prodigious creature; a prodigious blunder.
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Prodigal
A prodigal person; a spendthrift; a wastrel.
Prodigious
So great in size or force or extent as to elicit awe;
Colossal crumbling ruins of an ancient temple
Has a colossal nerve
A prodigious storm
A stupendous field of grass
Stupendous demand
Prodigal
Given to extravagant expenditure; expending money or other things without necessity; recklessly or viciously profuse; lavish; wasteful; not frugal or economical; as, a prodigal man; the prodigal son; prodigal giving; prodigal expenses.
In fighting fields [patriots] were prodigal of blood.
Prodigious
Of momentous or ominous significance;
Such a portentous...monster raised all my curiosity
A prodigious vision
Prodigal
One who expends money extravagantly, viciously, or without necessity; one that is profuse or lavish in any expenditure; a waster; a spendthrift.
Prodigious
Far beyond what is usual in magnitude or degree;
A night of exceeding darkness
An exceptional memory
Olympian efforts to save the city from bankruptcy
The young Mozart's prodigious talents
Prodigal
A recklessly extravagant consumer
Prodigal
Very generous;
Distributed gifts with a lavish hand
The critics were lavish in their praise
A munificent gift
His father gave him a half-dollar and his mother a quarter and he thought them munificent
Prodigal praise
Unsparing generosity
His unstinted devotion
Called for unstinting aid to Britain
Prodigal
Recklessly wasteful;
Prodigal in their expenditures
Prodigal
Marked by rash extravagance;
Led a prodigal life