having or showing a great deal of confidence

aggressive

of which there is no possible doubt

confident

easily understood and certain

definite

able to think, feel, see etc.

alert, awake

brave; fearless

brave, bold

clear; definite

certain, definite

having a definite result

definite

having, expressed with, emphasis; strong and firm

insistent, unequivocal

having hope; giving hope

optimistic, expectant

not easy troubled or excited

calm, collected

that cannot be avoided; so frequently seed, heard etc that it is familiar and expected

certain; cannot be avoided

definite; sure; leaving no room for doubt; of the sort caused by a lack of electrons

definite, certain

hopeful; optimistic

happy; optimistic

having good reasons to believe something; free from doubt; proved; reliable; without a doubt

certain, definite

not afraid

fearless

not involving conditions

absolute, total

certain; accepted as true

undisputed