BIP39 Words Starting with A (136 words)

The 136 BIP39 words that start with A run from #1 abandon to #136 axis in the English wordlist: indexes 0 to 135, or 00000000000 to 00010000111 in binary. That is 6.6% of the 2048 words, the 3rd-largest of the 25 letter groups. Word length goes from 3 letters (act, add and 8 more) to 8 (abstract, accident and 4 more).

27 three-letter beginnings are shared by two or more words; the largest is "act", with 5 words. The 77 words in these groups need their first four letters to be told apart, while 56 are identified by the first three, and 3 (aerobic, ahead and axis) by the first two.

29 of the 136 words have look-alikes one letter away, such as act and art. Swapping two neighbouring letters turns act into cat. Read aloud, 80 pairs differ by a single sound, for example access and axis. Five spellings are shared with the French BIP39 list, at different indexes: abandon, amateur, angle and 2 more. 22 of the words appear in the official BIP39 test vectors, among them abandon and ability.