A noun appearing as walwiste “change of mind” in Quenya Notes (QN) from 1957, a combination of walme “emotion” and viste “change” (PE17/189). In keeping with later Quenya pronunciation, I would update this to valwiste instead; see the entry on [w] for discussion.
Quenya
walwistë
change of mind
walwistë Archaic
noun. change of mind
valwistë
noun. change of mind
inwis
change of mind, mood
inwis noun "change of mind, mood". A following, bracketed form inwissi is either the plural, the ancestral form or a variant (PE17:191; cf. inwisti). Likely, inwis is to have the stem inwiss- before endings (alternatively inwist-, see inwisti below, and compare the verb vista- "to change").
walwistë noun "change of mind" (PE17:189)