What is the meaning of the word "negative"?

Definitions:

a reply of denial noun
- They answered in the negative.
designed or tending to discredit, especially without positive or helpful suggestions adjective
- negative criticism
having a negative charge adjective
- electrons are negative
having the quality of something harmful or unpleasant adjective
- ran a negative campaign
involving disadvantage or harm adjective
- minus (or negative) factors
less than zero adjective
- a negative number
not indicating the presence of microorganisms or disease or a specific condition adjective
- the HIV test was negative
reckoned in a direction opposite to that regarded as positive adjective
- negative interest rates