Synonyms of the word

nonnegative

• adj. (mathematics) (of a quantity) Not negative; either zero or positive.
• n. Any value that is not negative.

plus

• conj. sum of the previous one and the following one.
• conj. (colloquial) with; having in addition.
• conj. and also; in addition.
• n. A positive quantity.
• n. An asset or useful addition.
• n. (arithmetic) A plus sign: +.
• adj. Being positive rather than negative or zero.
• adj. Positive, or involving advantage.
• adj. (physics) Electrically positive.
• v. (informal) To add; to subject to addition.
• v. (often followed by 'up') To increase in magnitude.
• v. To improve.
• v. To provide critical feedback by giving suggestions for improvement rather than criticisms.
• v. (sales) To sell additional related items with an original purchase.
• v. (psychology) To frame in a positive light; to provide a sympathetic interpretation.
• v. (social media) To give a mark of approval on Google+.
• v. (homeopathy) To increase the potency of a remedy by diluting it in water and stirring.
• v. (optometry) To increase a correction.