Antonyms of adj swanky

1 sense of swanky

Sense 1
swank, swanky -- (imposingly fashionable and elegant; "a swank apartment")

INDIRECT (VIA fashionable) -> unfashionable, unstylish -- (not in accord with or not following current fashion; "unfashionable clothes"; "melodrama of a now unfashionable kind")

Similarity of adj swanky

1 sense of swanky

Sense 1
swank, swanky -- (imposingly fashionable and elegant; "a swank apartment")
       => fashionable (vs. unfashionable), stylish -- (being or in accordance with current social fashions; "fashionable clothing"; "the fashionable side of town"; "a fashionable cafe")