Webster's Revised Unabridged Dictionary · 1913

Assume

Assume ({not transcribed}) , transitive verb

[Latin assumere; ad + sumere to take; sub + emere to take, buy: compare French assumer. See Redeem.]

1.
To take to or upon one's self; to take formally and demonstratively; sometimes, to appropriate or take unjustly.
Trembling they stand while Jove assumes the throne. — Pope
The god assumed his native form again. — Pope
2.
To take for granted, or without proof; to suppose as a fact; to suppose or take arbitrarily or tentatively.
The consequences of assumed principles. — Whewell
3.
To pretend to possess; to take in appearance.
Ambition assuming the mask of religion. — Porteus
Assume a virtue, if you have it not. — Shakespeare
4.
To receive or adopt.
The sixth was a young knight of lesser renown and lower rank, assumed into that honorable company. — Sir W. Scott

Assume , intransitive verb

1.
To be arrogant or pretentious; to claim more than is due. — Bp. Burnet
2.
(Law) To undertake, as by a promise. — Burrill