| Language | Abbreviation | Equivalent |
| Albanian | ab | |
| Alemanic | ae | |
| Algonquin | al | |
| Ancient | an | |
| Arabic | ar | |
| Armenian | am | |
| Armoric | ac | Celtic |
| Assyrian | as | |
| Barbarian | bb | |
| Basque | ba | |
| Belgium | bl | |
| Bohemian | bo | |
| British | br | English |
| Bulgarian | bu | |
| Cambridge | ca | English |
| Cambro-Britain | cb | |
| Celtic | ce | |
| Chaldee | cl | |
| Cheshire | ch | English |
| Cimbrian | ci | |
| Cornish | co | |
| Cumberland | cu | English |
| Danish | da | |
| Derbyshire | dy | English |
| Devonshire | dv | English |
| Dutch | du | |
| East-Indies | ea | |
| Egyptian | eg | |
| English | en | |
| English:Canting | ct | English |
| Eskimo | es | |
| Essex | ex | English |
| Ethiopian | et | |
| Etruscan | er | |
| Flemish | fl | |
| French | fr | |
| French Picard | pi | |
| Frisian | fi | |
| Gaelic | ga | |
| Gallic | gc | |
| Gaulish | gl | |
| Georgian | ge | |
| German | gr | |
| Gothish | go | |
| Gotho-Swedish | gs | |
| Greek | gk | |
| Greek transliterated | gkt | Greek |
| Guinean | gu | |
| Haitian | ha | |
| Hebrew | he | |
| Hebrew transliterated | het | Hebrew |
| Herefordshire | hr | English |
| High Dutch | hd | |
| Hindi | hi | |
| Hungarian | hn | |
| Huron | hu | |
| Icelandic | ic | |
| Ilyrian | il | |
| Indian | in | |
| Irish | ir | |
| Italian | it | |
| Javanese | ja | |
| Kent | kt | English |
| Lancashire | lc | English |
| Latin | la | |
| Laurentian | lt | |
| Leicestershire | le | |
| Lincolnshire | li | English |
| Low Dutch | ld | Dutch |
| Lusitanian | lu | |
| Malagasy | mg | |
| Malay | ma | |
| Mande | my | |
| Manx | mx | |
| Median | mn | |
| Middle English | me | |
| Moldavian | md | |
| Moluccan | ml | |
| Moorish | mo | |
| Nahuatl | na | |
| Netherlands | ne | |
| Norfolk | nk | English |
| Norman | no | |
| North Wales | nw | |
| Northamptonshire | nh | English |
| Northern | nn | English |
| Northumberland | nb | English |
| Norwegian | nr | |
| Nottinghamshire | nt | English |
| Occitan | oc | |
| Old English | oe | |
| Old French | of | |
| Old Norse | on | |
| Old Saxon | os | |
| Old Word | ow | |
| Oxfordshire | ox | |
| Persian | pe | |
| Phoenician | ph | |
| Phrygian | pr | |
| Polish | po | |
| Portuguese | pt | |
| Punic | pu | |
| Quote | quo | |
| Runic Danish | rn | |
| Russian | ru | |
| Sanskrit | san | |
| Sarmatian | sa | |
| Saxon | sx | |
| Scots | sc | English |
| Scythian | sh | |
| Serbian | sr | |
| Sheffield | sf | English |
| Slavic | sl | |
| Somerset | sm | English |
| Southern | sn | |
| Spanish | sp | |
| Staffordshire | st | English |
| Suffolk | sk | English |
| Sussex | ss | English |
| Swedish | se | |
| Syriac | sy | |
| Syriac transliterated | syt | Syriac |
| Teutonic | tt | German |
| Thanet, Isle of | th | English |
| to-be-entered | tbd | |
| Turkish | tu | |
| Tuscan | ts | |
| Unknown | un | |
| Vulgar (non-Latin) | vu | |
| Wallon | wa | |
| Warwickshire | war | English |
| Welsh | we | |
| Western | wn | |
| Westmorland | wm | English |
| Wiltshire | wt | English |
| Worcestershire | wo | English |
| Yorkshire | yk | English |