something extra; a little more; and then some
Wasei-eigo expression meaning an additional amount, benefit, or factor beyond what is expected or stated. Often used in business, self-help, and casual conversation.
wasei-eigo (Japanese-coined English), from plus alpha
成功するには努力にプラスアルファが必要だ。
To succeed, you need effort plus something extra.
このプランにはプラスアルファの特典がついている。
This plan comes with an extra perk.