number-name/src/systems/en/short/names.json

{
  "base": {
    "units":      ["zero" , "one"    , "two"    , "three"    , "four"       , "five"       , "six"     , "seven"     , "eight"    , "nine"    ],
    "tenPlus":    ["ten"  , "eleven" , "twelve" , "thirteen" , "fourteen"   , "fifteen"    , "sixteen" , "seventeen" , "eighteen" , "nineteen"],
    "tens":       ["zero" , "ten"    , "twenty" , "thirty"   , "forty"      , "fifty"      , "sixty"   , "seventy"   , "eighty"   , "ninety"  ]
  },
  "prefix": {
    "units": {
      "formal":   [""     , "un"     , "duo"    , "tre"      , "quattuor"   , "quin"       , "sex"     , "septen"    , "octo"     , "novem"   ],
      "informal": [""     , "un"     , "do"     , "tre"      , "quattuor"   , "quin"       , "sex"     , "septen"    , "octo"     , "novem"   ]
    },
    "tens": {
      "formal":   [""     , "dec"    , "vigin"  , "trigin"   , "quadragin"  , "quinquagin" , "sexagin" , "septuagin" , "octogin"  , "nonagin" ],
      "informal": [""     , "dec"    , "vigin"  , "trigin"   , "quadragin"  , "quinquagin" , "sexagin" , "septuagin" , "octogin"  , "nonagin" ]
    },
    "hundreds": {
      "formal":   [""     , "cen"    , "duocen" , "trecen"   , "quadringen" , "quingen"    , "sescen"  , "septingen" , "octingen" , "nongen"  ],
      "informal": [""     , "cen"    , "ducen"  , "trecen"   , "quadringen" , "quingen"    , "sescen"  , "septingen" , "octingen" , "nongen"  ]
    },
    "special": {
      "formal":   [""     , "mi"     , "bi"     , "tri"      , "quadri"     , "quin"       , "sex"     , "sept"      , "oct"      , "non"     ],
      "informal": [""     , "mi"     , "bi"     , "tri"      , "quadri"     , "quin"       , "sex"     , "sept"      , "oct"      , "non"     ]
    }
  },
  "hundred": "hundred",
  "thousand": "thousand",
  "millia": "millia",
  "suffix": {
    "llion": "llion",
    "lliard": "lliard"
  }
}