Related Clues:

• In need of a backrub
• Grammarian's subject
• Likely to offend some people
• Having the jitters
• Nerve-straining
• Past or present
• Ill at ease
• Full of angst
• The past, for example
• New-fangled
• Not calm
• Future, for one
• Strained by time in grammar
• Anxious and unsure, restless
• Tense and nervous