under one's own steam


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under (one's) own steam

On one's own; with no assistance from anyone else. Look, mom, I can finish this book report on my own, OK? I don't need you hovering over me correcting my spelling!
See also: own, steam

under one's own steam

Independently, without help, as in For two years I published the quarterly newsletter under my own steam. This expression uses steam in the sense of "driving power," as in a steam engine. [Early 1900s]
See also: own, steam