Clue: Toughen up

Answer: INURE

Length: 5

---

Similar Clues:

• Upstate New York's ___ Lake (ONEIDA with 6 letters)
• It provides upper support (BRA with 3 letters)
• Upbraid (e.g. BERATE with 6 letters)
• Put one over on Middleton and Upton? (SNOWKATES with 9 letters)
• Serious uprising (RIOT with 4 letters)
• The upper Thames River (ISIS with 4 letters)
• Update the alarm system (REWIRE with 6 letters)
• Result of an upward stroke (TOPSPIN with 7 letters)
• Upscale restaurant requirement, maybe (NECKTIE with 7 letters)
• Advice to a writer to keep a stiff upper lip? (NEVERCRYWOOLF with 13 letters)