Antonyms of adj bounden

1 sense of bounden

Sense 1
bounden -- (morally obligatory; "my bounden duty")

INDIRECT (VIA obligatory) -> optional -- (possible but not necessary; left to personal choice)

Similarity of adj bounden

1 sense of bounden

Sense 1
bounden -- (morally obligatory; "my bounden duty")
       => obligatory (vs. optional) -- (morally or legally constraining or binding; "attendance is obligatory"; "an obligatory contribution")