Meaning of CROOKED in English
If you describe something as ~, especially something that is usually straight, you mean that it is bent or twisted.
...the ~ line of his broken nose.
...a ~ little tree.
A ~ smile is uneven and bigger on one side than the other.
Polly gave her a ~ grin.
Nick was smiling ~ly at her.
If you describe a person or an activity as ~, you mean that they are dishonest or criminal. (INFORMAL)
...a ~ cop...
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012