“低调”怎么翻译成英语？

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“他很低调”， 该怎么翻译成英语？
其实这个翻译很简单，就是字面的翻译：low-key

low-key
adj.

[搭配]VERBS
be, seem
低调；好像低调

keep sth
让某事保持低调:
We want to keep the whole affair as low-key as possible.
我们想尽可能低调地处理整件事情。

[搭配]ADV.
extremely, very
极其低调； 非常低调:
The wedding was a very low-key affair.
婚礼办得毫不招摇。

fairly, quite, rather, relatively
十分低调；比较低调:
We have a fairly low-key approach to discipline.
我们对纪律的管理并不是很严。

ˌlow-'key
◙adj
1. not intended to attract a lot of attention to an event, subject, or thing
• 低调的:
»They want the funeral to be as low-key as possible.
  他们希望葬礼办得尽量低调。
»a low-key military operation
  一场低调的军事行动