Antonyms of adj small-time

1 sense of small-time

Sense 1
nickel-and-dime, small-time -- (of minor importance; "a nickel-and-dime operation run out of a single rented room"; "a small-time actor")

INDIRECT (VIA unimportant) -> important, of import -- (of great significance or value; "important people"; "the important questions of the day")

Similarity of adj small-time

1 sense of small-time

Sense 1
nickel-and-dime, small-time -- (of minor importance; "a nickel-and-dime operation run out of a single rented room"; "a small-time actor")
       => unimportant (vs. important) -- (not important; "a relatively unimportant feature of the system"; "the question seems unimportant")