正当

timely

well-timed

just when (needed)

licitly

legitimacy

justness

justifiability

with propriety

in the very act of

righteousness

validness

legality

even

appropriate

valid

validity

proper

legal

equitableness

正当[zhèngdàng]

-（合理合法的）proper;rightful;rational[reasonable]andlegitimate:
reasonablerequest;justdemand;正当要求
soundreason;justifiablereason;正当的理由
短语正当驳回reasonabledismissal正当防卫justifiabledefense;legitimatedefence正当公告formalannouncement正当权益legitimaterightsandinterests正当收入legitimateincome正当手段propermeans正当途径properways;appropriatemeans;properchannels正当业务legitimatebusiness正当原因{律}goodcause正当自卫necessityofself-protection;legitimateself-defence另见zhèngdāng。

你的意见必须通过正当途径投诉。
Your complaint must be made through the proper channels.

他提出这种要求，只能说是正当的。
It's only just that he should claim it.

这条裙子的款式正当时令。
The style of this skirt is just in season.

你能证明你的行为是正当的吗？
Can you justify your action?

那个警察出于自卫枪击罪犯是正当防卫。
The policeman was justified in shooting the criminal in self-defence.