Antonyms of adj frustrative

1 sense of frustrative

Sense 1
frustrating, frustrative, thwarting -- (preventing realization or attainment of a desire)

INDIRECT (VIA preventive) -> permissive -- (not preventive)

Similarity of adj frustrative

1 sense of frustrative

Sense 1
frustrating, frustrative, thwarting -- (preventing realization or attainment of a desire)
       => preventive (vs. permissive), preventative -- (tending to prevent or hinder)