Definition of posilutely in English:

posilutely

(also posolutely, postolutely)

adverb

US
slang
  • Emphatically; without a doubt, irrefutably. Also used as an emphatic affirmative: yes, certainly, definitely.

Origin

Early 20th century; earliest use found in The Syracuse Herald. In some forms apparently irregularly from posit- + -olutely. In some forms blend of positively and absolutely (with the different spellings of the unstressed vowel in the second syllable reflecting the spellings of the component words).