An unfavorable result.
An unacceptable alternative.
Used to express a negative outcome or decision
Of a cough, producing mucus or sputum from the respiratory tract.
Of inflammation, producing new tissue.
Capable of producing something, especially in abundance; fertile.
Of, or relating to the creation of goods or services.
Consistently applicable to any of an open set of words.
Yielding good or useful results; constructive.
A type of set of natural numbers, related to mathematical logic.