Related Clues:

• Suspenseful
• Not easy
• Future perfect, for one
• Pluperfect, e.g.
• Apt to snap
• Noun concerning verbs
• Needing a massage
• Trend-setting
• Needing kneading?
• Not at all calm
• Liable to snap
• Far from relaxed
• Lacking slack
• In knots
• Touchy