Definition of onus probandi in English:

Share this entry

onus probandi

Pronunciation: /ˌōnəs prōˈbändē/ Pronunciation: /ˌōnəs prōˈbandē/

Entry from US English dictionary


The obligation to prove an assertion or allegation one makes; the burden of proof.
Example sentences
  • [The first [is], that the onus probandi lies in every case upon the party propounding a Will; and he must satisfy the conscience of the Court that the instrument so propounded is the last Will of a free and capable Testator.
  • We must go with Huxley in his contention that these rights may sometimes be displaced; but the onus probandi lies heavily on the shoulder of him who disputes that claim to possession, not on the man who seeks to defend it.


Latin, 'the burden of proving'.

For editors and proofreaders

Syllabification: o·nus pro·ban·di

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.