Here are some examples:
* "He approached his work with a lackadaisical attitude, which frustrated his boss."
* "The team's lackadaisical performance led to their defeat."
* "Her lackadaisical manner made it difficult to take her seriously."
"Maen" is not a word in English. It's possible you meant "mean" which could be used in conjunction with "lackadaisical" as in "lackadaisical mean" to describe someone who is both lethargic and also behaves in a rude or unkind way.
For example:
* "The lackadaisical mean bully refused to help his classmates."
* "She was so lackadaisical mean that she never offered to help anyone."
However, "lackadaisical mean" is not a common or idiomatic phrase.
It's important to clarify your question to provide the most accurate answer.