presumption

Synonyms: anticipation apriorism assumption basis chance conjecture grounds guess likelihood opinion plausibility posit postulate postulation premise presupposition probability reason shot shot in the dark sneaking suspicion stab supposition surmise suspicion thesis

Antonyms: reality truth

Synonyms: arrogance assurance audacity boldness brashness brass cheek chutzpah confidence contumely effrontery gall impudence insolence nerve presumptuousness rudeness temerity

Antonyms: humility