The word ᴱQ. qildare “bat” appeared in both the Qenya Lexicon and Poetic and Mythological Words of Eldarissa of the 1910s as an elaboration of ᴱQ. qilda “quiet” (QL/78; PME/78).
Neo-Quenya: I’d retain ᴺQ. quildarë “bat” for purposes of Neo-Quenya, still based on ᴺQ. quilda “quiet”.
An adjective appearing as ᴱQ. qilda “quiet, hushed, still” in the Qenya Lexicon of the 1910s under the early root ᴱ√QḶÐḶ (QL/44).
Neo-Quenya: For purposes of Neo-Quenya, I would retain ᴺQ. quilda “quiet, hushed, still” derived from a Neo-Root ᴺ√KWILID.