Old English 'twelf' — literally 'two left over ten,' from Proto-Germanic *twa- (two) + *-lif (left).
The number equivalent to the product of three and four; 12.
From Old English 'twelf,' from Proto-Germanic *twalif, literally meaning 'two left over' — that is, two remaining after ten has been counted. The compound is from *twa- (two) + *-lif (left, remaining), from PIE *leykʷ- (to leave, to remain). The word reflects a base-ten counting system where eleven ('one left') and twelve ('two left') were named relative to ten, rather than being formed by simple addition. This naming pattern was so fixed by the time of Old English that it survived
The word 'twelve' literally means 'two left over' — two remaining after you have counted to ten. Similarly, 'eleven' means 'one left over' (from Proto-Germanic *ainalif). These are the only English numbers that preserve this ancient Germanic 'leftover' counting system. From thirteen onward, English switched