Main entry: destructive
Definition: causing destruction or much damage
Usage: a policy that is destructive to the economy; destructive criticism
Antonyms: constructive
Definition: constructing or tending to construct or improve or promote development
Antonyms: affirmative
Definition: a reply of affirmation
Antonyms: affirmative, affirmatory
Definition: affirming or giving assent
Antonyms: positive
Definition: characterized by or displaying affirmation or acceptance or certainty etc.
Antonyms: neutral
Definition: possessing no distinctive quality or characteristics
Antonyms: positive
Definition: reckoned, situated or tending in the direction which naturally or arbitrarily is taken to indicate increase or progress or onward motion
Antonyms: positive, confirming
Definition: indicating existence or presence of a suspected condition or pathogen
Antonyms: thrifty
Definition: careful and diligent in the use of resources