ASSUMPTIVELY
Etymology
Adverb
assumptively (comparative more assumptively, superlative most assumptively)
In an assumptive manner.
Source: Wiktionary
ASSUMPTIVE
As*sump"tive, a. Etym: [L. assumptivus, fr. assumptus, fr. assumere.]
Definition: Assumed, or capable of being assumed; characterized by
assumption; making unwarranted claims.
– As*sump"tive*ly, adv. Assumptive arms (Her.), originally, arms
which a person had a right to assume, in consequence of an exploit;
now, those assumed without sanction of the Heralds' College. Percy
Smith.
Source: Webster’s Unabridged Dictionary 1913 Edition