Quenya 

indo

heart, mood

indo (1) noun "heart, mood" (ID), "state" (perhaps especially state of mind, given the other glosses) (VT39:23), "mind, region/range of thought, mood" (PE17:155, 179), "inner thought, in fea as exhibited in character or [?personality]" (PE17:189). In another post-LotR source, indo is translated "resolve" or "will", the state of mind leading directly to action (VT41:13). Indo is thus "the mind in its purposing faculty, the will" (VT41:17). Indo-ninya,a word occurring in Fíriels Song, translated "my heart" (see ninya). In the compound indemma "mind-picture", the first element would seem to be indo.