English
testamentation
From testament + -ation.
Formed from testament + -ation
Proto-Indo-European *tristh₂s
…
Latin testor ‘to be a witness, testify, attest, make a will’
Latin testāmentum ‘the publication of a will, a will, testament’
Old French testament ‘testimony’
Middle English testament
English testament
Today it means
noun The act or power of giving by testament, or will.
Sources
Sources: Wiktionary, “testamentation”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / testamentation