pair — BIP39 word #1273
"pair" is word #1273 of the 2048 words in the official BIP39 English wordlist, between page and palace.
In a seed phrase it stands for the 11-bit value
10011111000,
decimal index 1272.
/peə/ · noun: two things of the same kind that are used together
Russian: пара
Binary Representation
Six 1-bits and five 0-bits; 462 of the 2048 indexes have exactly six 1-bits.
One wrong bit turns it into (leftmost bit first):
Position
#1273 of 2048
Hex Index
0x4F8
4-Letter Prefix
pair
About "pair" in BIP39
- "pair" has 4 letters, but the first three, "pai", already identify it, because "pa" also begins 24 other words, among them pact, paddle, page and palace. Three letters are enough for only 604 of the 2048 words.
- "pair" is unique only within the English list: it also begins pairar in the Portuguese list, so a four-letter backup should say which list it uses.
Word #1273 in the Other 9 BIP39 Wordlists
Similar Words — Check Carefully During Recovery
"pair" sounds exactly like pear: both are transcribed /peə/. When a phrase is read aloud or dictated, spell this word out.
2 BIP39 words differ from "pair" by just a single letter — the most common source of typos when a seed phrase is entered by hand:
Read aloud, "pair" /peə/ is one sound away from these 7 words: