Synonyms for Assumptive (same or very similar meaning)
WordNet sense 1 (excessively forward):
assuming, presumptuous
WordNet sense 2 (used of temperament or behavior; lacking restraint or modesty):
forward
WordNet sense 3 (accepted as real or true without proof):
assumed
WordNet sense 4 (recognized or made known or admitted):
acknowledged
From the ODE community, based on WordNet
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