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Related to backdoor: Backdoor listing
1. adjective Done or achieved in a clandestine, stealthy, illegal and/or illicit way, or by such means. Such backdoor appointments of its chief members of staff make me worry that nepotism is rife within the company. They were arrested by customs agents for their backdoor import of cheap tobacco into the country.
2. verb To use deceitful, duplicitous, or morally questionable means to circumvent someone's authority, influence, or integrity for the sake of one's personal gains. Government agents tried to backdoor the activist by planting discrediting information about her in newspapers.
A man having an affair with a married woman. I can't believe you're having an affair with a married woman! That makes you a dirty, rotten backdoor man!
n. a case of diarrhea. (From the time when people had to go out the back door to the outhouse.) I can’t go out tonight. I got a case of the backdoor trots.
See backdoor trots