“understood”

Indicates comprehension on the part of the speaker.

The amount of time that some being has been alive, or that some thing has been in existence, as measured from its birth or origin until the present or until some other given reference point. (Often measured in number of years; alternatively in months, days, hours, etc.; see also the usage notes)

Transparent in colour.

A polite formula used when one has not heard or understood what has been said, or to indicate surprise.

To reveal a non-obvious or hidden aspect of a plan or situation to (a person).