thank, give thanks

This word only works as a loanword from Quenya. As Carl F. Hostetter pointed out in his essay “Elvish as She is Spoke” it wouldn't work as a native Sindarin term.

Sindarinization of deduced Quenya verb hanta- from Eruhantale “Eru-Thanksgiving” (UT:166; VT43:14)

Quenya verb: anta- “give” (ANA1, MC215, 221, PE17:91,147, cf. QL:31, VT49:14, LR:63, VT43:17, VT44:13) versus Sindarin verb anna- “give” (E/348; VT/44:21-7; LotR/A; PE/17:93,147)

David Salo