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: to go away from a place usually for a short distance and for a short time
: to go or march at a vigorous or increased pace
: to lead an active social life
: to be unfaithful
—usually used with on had been stepping out on his wife
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cheat, philander, screw around
circa 1533, in the meaning defined at sense 1
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step on (someone's) toes
step on the gas
step on the toes of (someone)
step out of line
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