incumbent on

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Related to incumbent on: incumbent upon
References in classic literature ?
Heyward felt it had now become incumbent on him to act.
I thought that to discharge this office as I ought, it was incumbent on me to provide necessaries as well for the bodies as the souls of the converted Catholics.
With the prospect of spending at least two months at Uppercross, it was highly incumbent on her to clothe her imagination, her memory, and all her ideas in as much of Uppercross as possible.