Antonyms of adj button-down

2 senses of button-down

Sense 1
button-down, buttoned-down, conservative -- (unimaginatively conventional; "a colorful character in the buttoned-down, dull-grey world of business"- Newsweek)

INDIRECT (VIA conventional, conventional) -> unconventional -- (not conventional or conformist; "unconventional life styles")

Sense 2
button-down -- (of a shirt; having the ends of the collar fastened down by buttons; "Brooks Brothers button-down shirts")

INDIRECT (VIA buttoned) -> unbuttoned, unfastened -- (not buttoned; "the wind picked up the hem of her unbuttoned coat")

Similarity of adj button-down

2 senses of button-down

Sense 1
button-down, buttoned-down, conservative -- (unimaginatively conventional; "a colorful character in the buttoned-down, dull-grey world of business"- Newsweek)
       => conventional (vs. unconventional) -- (unimaginative and conformist; "conventional bourgeois lives"; "conventional attitudes")

Sense 2
button-down -- (of a shirt; having the ends of the collar fastened down by buttons; "Brooks Brothers button-down shirts")
       => buttoned (vs. unbuttoned), fastened -- (furnished or closed with buttons or something buttonlike)