Meaning : Immediately following or undeservedly benefiting from.
Example :
The CEO resigned on the coattails of the scandal.
He was elected on his predecessor's coattails.
Synonyms : on the coattails
One one's coattails ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Marathi. One one's coattails ka matlab kya hota hai?