1.Definition: being or having the character of a miracle

Related Adjective(s):marvellous, miraculous

2.Definition: extraordinarily good or great; used especially as intensifiers

"A marvelous collection of rare books"

Related Adjective(s):fantastic, grand, howling, marvellous, rattling, terrific, tremendous, wonderful, wondrous

3.Definition: too improbable to admit of belief

Related Adjective(s):improbable, marvellous, tall