Meaning of -d | Babel Free

Definitions

1. An empty suffix, perhaps derived from the past-tense suffix above, added in some dialects to the present tense forms of some words which then add an additional -ed in the past tense.
   morpheme
2. Marks ordinals written in digits when the final term of the spelled number is "second" or "third"
   morpheme

Examples

“bone → boned, pirouette → pirouetted, learn → learnd”

“damn → damnd (→ damnded), drown → drownd (→ drownded)”

“2d grade; 23d century”

CEFR level