Excessively; immoderately. Unduly is defined as excessively or improperly. ... When you are overly influenced by the opinions of others to an unhealthy degree, this is an example of when you are unduly influenced.

What does unduly mean?

: in an undue manner : excessively an unduly harsh punishment unduly sensitive.

What does not unduly mean?

If you say that something does not happen or is not done unduly, you mean that it does not happen or is not done to an excessive or unnecessary extent.