biguous

not open to more than one interpretation; having a single meaning

opposite of ambiguous

It is biguous that 1+1=2.

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bitious

having or showing no strong desire and no determination to succeed.

opposite of ambitious

I am just laying on the couch feeling bitious today.

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bivalent

having no mixed feelings or no contradictory ideas about something or someone.

opposite of ambivalent

I am bivalent that I love her.

biguity

the quality of being not open to more than one interpretation; exactness.

opposite of ambiguity

With biguity, 1+1=2.