BIP39 Words Starting with I (55 words)

The 55 BIP39 words that start with I run from #898 ice to #952 ivory in the English wordlist: indexes 897 to 951, or 01110000001 to 01110110111 in binary. That is 2.7% of the 2048 words, the 16th-largest of the 25 letter groups. Word length goes from 3 letters (ice and ill) to 8 (identify, increase and 4 more).

13 three-letter beginnings are shared by two or more words; the largest is "ins", with 5 words. The 39 words in these groups need their first four letters to be told apart, while 12 are identified by the first three, and 4 (ignore, iron, item and 1 more) by the first two. The short word ill also begins longer ones, so a four-letter backup keeps it whole.

Nine of the 55 words have look-alikes one letter away, such as icon and iron. Read aloud, 18 pairs differ by a single sound, for example inch and inner. Five spellings are shared with the French BIP39 list, at different indexes: image, immense, impact and 2 more. Six of the words appear in the official BIP39 test vectors, among them income and inflict.