Antonyms of adj precautional

1 sense of precautional

Sense 1
precautionary, precautional -- (taken in advance to protect against possible danger or failure; "gave precautionary advice"; "I would take precautionary steps to keep him away")

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

Similarity of adj precautional

1 sense of precautional

Sense 1
precautionary, precautional -- (taken in advance to protect against possible danger or failure; "gave precautionary advice"; "I would take precautionary steps to keep him away")
       => preventive (vs. permissive), preventative -- (tending to prevent or hinder)