MeanOF

spontaneous

- adjective (adj)

Meaning: impulsive, willing

Synonyms: ad-lib automatic break loose casual down extemporaneous extempore free free spirited from the hip impetuous impromptu improvised inevitable instinctive involuntary irresistible natural offhand off-the-cuff off top of head simple unartful unavoidable unbidden uncompelled unconscious unconstrained uncontrived uncontrolled unforced unintentional unplanned unpremediated unprompted unsophisticated unstudied up front voluntary

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.