Related Clues:

• ''Don't give up!''
• Exert effort
• Word repeated before ''again''
• Word repeated before ''again,'' in a saying
• Take a whack
• Give one's all
• Be plucky
• Experiment with
• Lift a finger
• Really test
• Bend over backward
• Sip, say
• Tax, as one's patience
• Determine the innocence or guilt of
• Participate