Synonyms of big-deal

1 Syllable

firm, strong, key, stout, vast, sound, big

2 Syllables

heavy, large, hefty, serious, tidy, goodly, well-built, weighty, stable, solid, sturdy, steady, bulky

3 Syllables

principal, durable, generous, valuable, sizable, abundant, material, plentiful, momentous, worthwhile, substantial, massive, meaningful, heavyweight

4 Syllables

significant, major-league, consequential

5 Syllables

superabundant, considerable, extraordinary