PRESUMP'TUOUSLY, adverb With rash confidence. 1. Arrogantly; insolently. 2. Willfully; in bold defiance of conscience or violation of known duty; as, to sin presumptuously Numbers 15:30. 3. With groundless and vain confidence in the divine favor.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI