Frequency: The word is one of the 3000 most common words in English.
1.
If something is false, it is incorrect, untrue, or mistaken.
It was quite clear the President was being given false information by those around him...
You do not know whether what you're told is true or false...
His sister said he had deliberately given the hospital a false name and address.
? true
ADJ
• falsely
...a man who is falsely accused of a crime.
= wrongly
ADV: ADV with v
2.
You use false to describe objects which are artificial but which are intended to look like the real thing or to be used instead of the real thing.
...a set of false teeth...
= artificial
? real
ADJ: usu ADJ n
3.
If you describe a person or their behaviour as false, you are criticizing them for being insincere or for hiding their real feelings.
'Thank you,' she said with false enthusiasm...
? genuine
ADJ [disapproval]
• falsely
He was falsely jovial, with his booming, mirthless laugh...
'This food is divine,' they murmur, falsely.
ADV: ADV adj, ADV after v