Antonyms of adj significative

1 sense of significative

Sense 1
indicative, indicatory, revelatory, significative, suggestive -- ((usually followed by `of') pointing out or revealing clearly; "actions indicative of fear")

INDIRECT (VIA revealing) -> concealing -- (covering or hiding; "the concealing darkness"; "concealing curtains prevented discovery")

Similarity of adj significative

1 sense of significative

Sense 1
indicative, indicatory, revelatory, significative, suggestive -- ((usually followed by `of') pointing out or revealing clearly; "actions indicative of fear")
       => revealing (vs. concealing) -- (showing or making known; "her dress was scanty and revealing")