The two-letter word viewer has been updated to include three new two-letter words for 2019. Both the North America (TWL) and International (CSW) lexicons will now include OK and EW. From players, the general reaction to EW was “ok”, and to OK was “ew”. The International lexicon update also includes ZE, the gender-neutral third person singular subjective pronoun. I wonder if the categorisation system needs (or will need) a category of words that are unfamiliar not because they are old but because they are young.
Ruminations on language evolution, the editorial decision-making of lexicon compilation, lawn-defence, etc., are left as an exercise for the reader.