abandon >> /əˈbændən/
Definition: [transitive verb] Cease to support or look after (someone); desert.
Example: her natural mother had abandoned her at an early age
Definition: [transitive verb] Give up completely (a course of action, a practice, or a way of thinking)
Example: he had clearly abandoned all pretense of trying to succeed
Definition: [transitive verb] Allow oneself to indulge in (a desire or impulse)
Example: they abandoned themselves to despair
Definition: [noun] Complete lack of inhibition or restraint.
Example: she sings and sways with total abandon