1. Catch someone out by doing something unexpected 
2. (in a sport, e.g. tennis) to catch an opponent off balance

Derived forms: wrong-footed, wrong-foots, wrong-footing

• unmelodious
• unmelodiously
• unmelted
• unmemorable
• unmemorably
• unmentionable
• unmercenary
• unmerchantable
• unmerciful
• unmercifully
• unmercifulness
• unmerited
• unmeritorious
• unmet
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• unmilitary
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• unmindfully
• unmindfulness
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• unmistakable
• unmistakably
• unmistakeable