These guys also like their girls to be hairless, so they assume the girls want the same thing from them.
But I'm going to take you at your word and assume that those claims are absolutes.
Besides which, he should not just assume that Americans will blame the GOP if we go over the cliff.
early 15c., assumpten "to receive up into heaven" (especially of the Virgin Mary), also assumen "to arrogate," from Latin assumere "to take up, take to oneself," from ad- "to, up" (see ad-) + sumere "to take," from sub "under" + emere "to take" (see exempt (adj.)).
Meaning "to suppose, to take for granted as the basis of argument" is first recorded 1590s; that of "to take or put on (an appearance, etc.)" is from c.1600. Related: Assumed; assuming. Early past participle was assumpt. In rhetorical usage, assume expresses what the assumer postulates, often as a confessed hypothesis; presume expresses what the presumer really believes.