flash — BIP39 word #708
"flash" is word #708 of the 2048 words in the official BIP39 English wordlist, between flame and flat.
In a seed phrase it stands for the 11-bit value
01011000011,
decimal index 707.
/flæʃ/ · noun: a sudden brief burst of bright light
Russian: вспышка
Binary Representation
Five 1-bits and six 0-bits; 462 of the 2048 indexes have exactly five 1-bits.
One wrong bit turns it into (leftmost bit first):
Position
#708 of 2048
Hex Index
0x2C3
4-Letter Prefix
flas
About "flash" in BIP39
- "flash" has 5 letters, but the first four, "flas", already identify it, because "fla" also begins flag, flame, flat and flavor.
- "flas" is unique only within the English list: it also begins flasque in the French list, so a four-letter backup should say which list it uses.
- "flash" appears in one of the 24 official English test vectors of BIP39: vector #18 (word 16 of 24). Every official vector passes the checksum checker, and How BIP39 works shows how the entropy turns into such words.
panda eyebrow bullet gorilla call smoke muffin taste mesh discover soft ostrich alcohol speed nation flash devote level hobby quick inner drive ghost inside
Word #708 in the Other 9 BIP39 Wordlists
Similar Words — Check Carefully During Recovery
One BIP39 word differs from "flash" by just a single letter — the most common source of typos when a seed phrase is entered by hand:
Read aloud, "flash" /flæʃ/ is one sound away from these 2 words: