A noun appearing as ᴱQ. alatya- in the Early Noldorin Dictionary of the 1920s, derived from primitive ᴱ✶alakya- and cognate to ᴱN. elaig- “to shield, ward off, protect” (PE13/158). It is followed by two forms altíne and alantye which Tolkien seems to indicate are aor[ist], but actually appear to be weak and half-strong past forms respectively.

Neo-Quenya: For purposes of Neo-Quenya, I would retain ᴺQ. alatya- in the limited sense “to shield, ward off” [always = active defense]. For “protect” [possibly = passive defense] I would use the later verb [ᴹQ.] varya-. Perhaps alatya- is derived from √ALAK “rushing” with *alakyā- originally having the sense “cause to rush (away)”. Given this, I would use a weak past *alatyane “warded off” for this verb.