Also found in: Encyclopedia.
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A signal, message, or communication that has, or is interpreted as having, multiple, ambiguous, or contradictory meanings. (Often plural.) I keep getting these mixed signals from my ex-girlfriend. I can't tell if she just wants to be friends, or if she's interested in getting back together. I just think it sends something of a mixed signal to be advertising a new production assistant position right after we went through a round of layoffs.