Definitions of abandon:

• noun:   the trait of lacking restraint or control; freedom from inhibition or worry

  Example: "She danced with abandon"

• noun:   a feeling of extreme emotional intensity
• verb:   give up with the intent of never claiming again

  Example: "Abandon your life to God"

• verb:   forsake, leave behind

  Example: "We abandoned the old car in the empty parking lot"

• verb:   stop maintaining or insisting on; of ideas, claims, etc.

  Example: "He abandoned the thought of asking for her hand in marriage"

• verb:   leave someone who needs or counts on you; leave in the lurch
• verb:   leave behind empty; move out of