Related Clues:

• Go like mad
• Salt measure
• Hyphen's cousin
• Morse code E
• T, in Morse code
• Certain race
• Run … or ruin
• When said three times, finale suggesting uncertainty
• Code character
• 100-meter race, e.g.
• 'The Incredibles' son
• Freckle
• Braille unit
• Just a pinch
• Telegraphed sound