Antonyms of adj jumped-up

1 sense of jumped-up

Sense 1
jumped-up -- ((British informal) upstart)

INDIRECT (VIA pretentious) -> unpretentious -- (lacking pretension or affectation; "an unpretentious country church"; "her quiet unpretentious demeanor")

Similarity of adj jumped-up

1 sense of jumped-up

Sense 1
jumped-up -- ((British informal) upstart)
       => pretentious (vs. unpretentious) -- (making claim to or creating an appearance of (often undeserved) importance or distinction; "a pretentious country house"; "a pretentious fraud"; "a pretentious scholarly edition")