[bit-er-en-der] 
| a person who persists until the bitter end without compromising or yielding; diehard. |
| bit·ter·end·er or bit·ter-end·er (bĭt'ər-ěn'dər) n. One who persists in an action, attitude, or state despite difficult circumstances, until it becomes impossible to continue. |
ərˈɛn