一いち倍ばい

noun

multiplying by one; original amount

Mathematical sense: multiplying by one, i.e., the same amount. Often used in contexts like 元の一倍 (the original amount).

• この値ね段だんは元もとの一いち倍ばいです。

  This price is the same as the original.

adverb

(even) more

Used adverbially in the fixed expression 人一倍 (more than others, exceptionally). Not used as a standalone adverb.

See also: 人一倍

• 彼かれは人ひと一いち倍ばい努ど力りょくした。

  He made an extra effort, more than anyone else.

noun

double; twice as much; twofold

Dated usage meaning 'double'. In modern Japanese, 二倍 is standard for 'double'. 一倍 now usually means 'same amount'.

See also: 二倍

• 昔むかしは「一いち倍ばい」が「二に倍ばい」の意い味みで使つかわれた。

  In the past, 一倍 was used to mean 'double'.