Quenya 

quildë

quiet, rest, hush

quildë, quillë noun "quiet, rest, hush" (GL:23, QL:78)

quilda

quiet, hushed, still

quilda adj. "quiet, hushed, still" (QL:78)

quilde

noun. quiet, rest, hush

@@@ of the two EQ. forms, this one is most consistent with the Q. syncope

Derivations