BIP39 Words Starting with M (105 words)

The 105 BIP39 words that start with M run from #1069 machine to #1173 myth in the English wordlist: indexes 1068 to 1172, or 10000101100 to 10010010100 in binary. That is 5.1% of the 2048 words, the 10th-largest of the 25 letter groups. Word length goes from 3 letters (mad, man and 2 more) to 8 (marriage, material and 6 more).

30 three-letter beginnings are shared by two or more words; the largest, with 6 words each, are "man" and "mar". The 88 words in these groups need their first four letters to be told apart, while 17 are identified by the first three. The short words man, mix and mom also begin longer ones, so a four-letter backup keeps them whole.

38 of the 105 words have look-alikes one letter away, such as mad and maid. Read aloud, 61 pairs differ by a single sound, for example machine and marine. Six spellings are shared with the French BIP39 list, at different indexes: machine, million, minute and 3 more. Eleven of the words appear in the official BIP39 test vectors, among them machine and make.