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The Collaborative International Dictionary
Threnetic

Threnetic \Thre*net"ic\, Threnetical \Thre*net"ic*al\, a. [Gr. ?. See Threne.] Pertaining to a threne; sorrowful; mournful.

Wiktionary
threnetic

a. Relating to a threne; sorrowful; mournful.