A root in the Qenya Lexicon of the 1910s glossed “rob”, with derivatives like ᴱQ. pili- “steal”, ᴱQ. pilu “thief, robber” and ᴱQ. pilwe “robbery, theft” (QL/74). There are no signs of this root in Tolkien’s later writing, but I think it is worth retaining as the Neo-Eldarin basis for “theft” words. A possible later replacement might be the root √RAPH “seize, grab” from the Outline of Phonology (OP2) from the early 1950s which had the derivative Q. arpo “seizer, thief” (PE19/89), but the verb form Q. raf- was glossed “wave, brandish”, so I don’t think it is suitable for a direct replacement.