Meaning of the word "all the while" in English

What does "all the while" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

all the while

US /ɔːl ðə waɪl/
UK /ɔːl ðə waɪl/

Phrase

during the entire time; at the same time as something else is happening

Example:
She pretended to be working, but all the while she was secretly planning her escape.
He acted calm and collected, but all the while, he was extremely nervous.