Why is 2 a word? about english-words HOT 1 CLOSED

@Panama-Hat I don't know if you are serious or having a laugh. 🙄

My guess is that the "2" is in the context of SMS abbreviations like a2b or "go2doc" (as an abbreviation for "go to the doctor"). Using the digit 2 allows the writer to save typing 3 characters. Which in the early days of SMS messaging was good because there was a limit to the number of characters per message. So 2 save money, people used the digit 2 in place of "too" or "to".
See: https://www.webopedia.com/quick_ref/textmessageabbreviations.asp
and http://onlineslangdictionary.com/meaning-definition-of/2

Please don't waste 2 much time on this, the list was compiled not hand-written so we definitely cannot guarantee that we know the reason for all the words.

There are many words in the Oxford English Dictionary that we would not consider "real" words.
see the most recent additions: https://public.oed.com/updates/new-words-list-october-2019/

from english-words.