adjective
[more ~; most ~] :good or useful
[more ~; most ~] :thinking about the good qualities of someone or something :thinking that a good result will happen :hopeful or optimistic
not used before a noun :completely certain or sure that something is correct or true
[more ~; most ~] :showing or expressing support, approval, or agreement
unable to be doubted :certainly true
showing the presence of a particular germ, condition, or substance
a mathematics :greater than zero
more than the amount of money spent or invested
technical
containing or producing electricity that is charged by a proton
having more protons than electrons
always used before a noun informal :absolute or complete - used to make a statement more forceful
noun
plural -tives
[count] something that is good or useful
the result from a test that shows that a particular germ, condition, or substance is present
a photograph that shows light and dark areas or colors as they look in real life - compare negative