Irish, Scottish, English:
1. high goddess. Sindarin: Arrodil, Halrodil ||
2. strong, resolute strength. Sindarin: (firm, steadfast) Tanc, Thala, Thand; fem. Tangeth, Thanneth; fem. (firm, steadfast maiden) Tangwen, Thalawen, Thanwen ||
The Sindarin words for ‘strength’ are more to do with ‘physical strength’ than in reference to personal qualities.