give someone an inch and they'll take a mile

give someone an inch and they'll take a mile

If you say give someone an inch and they'll take a mile, you mean that if you do a small favour for someone, they will become greedy and ask you to do bigger and bigger favours for them and make you regret doing the first favour. Be tough and uncompromising — if you give colleagues an inch, they will take a mile. Note: Sometimes people just say give them an inch, or use another word instead of `mile'. You know what kids are like. Give them an inch. The problem with him was that if you gave him an inch he'd take six.
See also: and, give, inch, mile, take
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