ultroneous

adjective

ul·​tro·​ne·​ous

ˌəlˈtrōnēəs

Scots law

: that voluntarily offers testimony without being cited

an ultroneous witness

Word History

Etymology

Latin ultroneus voluntary, spontaneous, from ultro beyond, beyond expectation, spontaneously, from ablative singular masculine or neuter of (assumed) ulter situated beyond

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