Word #1745 11011010000

sure — BIP39 word #1745

"sure" is word #1745 of the 2048 words in the official BIP39 English wordlist, between supreme and surface. In a seed phrase it stands for the 11-bit value 11011010000, decimal index 1744.

/ʃʊə/ · adjective: completely certain about something

Russian: уверенный

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):

foam old wheel skate spirit task submit swallow surround surge surface

Position

#1745 of 2048

Hex Index

0x6D0

4-Letter Prefix

sure

About "sure" in BIP39

It takes all four letters to identify "sure": "sur" also begins surface, surge, surprise, surround and survey.
"sure" is unique only within the English list: it also begins sureño in the Spanish list, so a four-letter backup should say which list it uses.