Experts approached regional word societies across the UK to encourage them to submit words on the brink of extinction.
The terms will become officially playable when they are included in the next edition of the Collins Scrabble Dictionary.
Competitors taking part in Sunday's Scrabble National Championship in London have backed the move.
Paul Gallen, 26, a solicitor from Belfast, said: "New and emerging words are included within the Scrabble dictionary, so it is fun and appropriate to celebrate rarer, older ones."
Olawale Fashina, 43, an accountant from Liverpool, said: "If you are a word lover, you welcome any initiative that celebrates every corner of the language."
Endangered words to become officially playable in Scrabble, by region:
Devon:
Zowpeg, Zowpig - woodlouse
Quaazy - unwell
Gleanies - guinea fowl
East Yorkshire:
Swaal - throw, chuck
Twag - play truant
Scaal - to spread over the ground (eg muck)
Cumbria:
Darrack - a day's work
Whick - living, alive - not dead
Lancashire:
Marlock - to play, joke, prank
Meemaw - an antic, grotesque action, expression of freedom
Layrock - skylark or lark
Lincolnshire:
Skelled - tipped
Arrad - tired
Splawder - to walk or run awkwardly and inefficiently, to spread over
Hotchin - a hedgehog
Gawster - to laugh helplessly
Nowter - a nobody, someone who does not count
Norfolk:
Tizzick - cough
Pishamire - ant
Swidge - small puzzle
Northumberland:
Stangy - tailor
Norration - confused noise, disturbance
Kent:
Pogger - compulsive worrier
Boboy - human figure, scarecrow
- PAA