Eventempered

5 clues
Equable
Imperturbable
Slow to anger
Calm by nature
Unlikely to hit the ceiling
Similar answers:
Atseventeen
Badtempered
Distempered
Edgeofseventeen
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Eventenor
Eventer
Fourscoreandseventeen
Hampered
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Luckyseventeen
Pampered
Prevented
Prevententry
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Seventeen
Seventeenacross
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Tampered