Unobsolete: an occasional column devoted to tracking social and lexical change with reference to words, phrases and definitions in the OED that are labelled ‘Obs.’ but are now unobsolescing:
Etymology: Shortened < cuckold n.
Obs. = cuckold n.
The OED’s one illustrative quotation comes from Ned Ward’s Hudibras Redivivus (1706). But the word now reappears on OxfordDictionaries.com, dated to the early twenty-first century:
US informal A weak or servile man (often used as a contemptuous term for a man with moderate or progressive political views).