(a) To undertake (sth.) without warrant, take (sth.) upon oneself; therin ~, presume to engage in an action; ~ in, take an action presumptuously upon (oneself); ~ of, venture to act by (oneself); ben presumed ayenes, be undertaken or founded without the sanction of (sb.); as i dar ~, as I dare say or assume; (b) to have the temerity (to do sth.); take the liberty of (doing sth.); venture (to do sth.), dare; (c) refl. to take it upon oneself (to do sth.); ~ on (upon) him, take it upon himself; (d) to be arrogant or presumptuous, behave presumptuously; ~ of (upon), be arrogant because of (one's mind, strength, etc.); ~ of him-self (hem-self), ~ upon theim-self, be presumptuous; ppl. presuminge, presumptuous; presuminge of, presuming upon (one's good looks); (e) to advance overconfidently or unwarrantedly into a position; ~ on, call oneself presumptuously to the attention of (sb.); (f) to aspire to (sth.).

(a) To take action; undertake (to do sth.) [sometimes difficult to distinguish from 1a. (b), to which some quots. here may belong]; (b) to undertake (to do sth.) first.

(a) To take for granted (that sth. is so), assume; ~ in, put one's trust in (oneself); ~ of, rely on (sth.); ~ folie, assume the presence of foolishness; (b) to assume overconfidently or unwarrantably (that sth. is so); -- also refl.; suppose oneself to know (sth.) unwarrantably; suppose oneself (to be or know sth., to be able to do sth.); ~ on, take it upon (oneself) to assume (sth.); ~ pouer in, assume that the power (to do sth.) resides in (oneself); (c) to foresee (sth.); expect (to find sth.); ~ in, look for (sth.), have expectations of; (d) to expect or hope overconfidently (to do sth.); (e) ~ of, to take (God's mercy) for granted; ~ of (in), rely on (one's own virtue or merits) for salvation.

To seize or hold (sth.) without right, usurp; ~ upon, take upon (oneself an official position), assume (a position of authority).