Logan is right. Context is everything.

"Clever" could be negative in context.

"The nagarpalika worker cleverly avoided doing his job so others had to pick up the slack for him",

or "The thief found a clever way to break into peoples' houses without ever being suspected".

Or "Mr. कप Oli cleverly avoids answering tough questions by changing the subject and talking about गैंडा पुराण र उखान टुक्का "

Same thing with चलाख

"मेरो कुकुर अति चलाख छ . बन्द गरेको ढोकाको handle खोलेर बाहिर जान सक्छ "

"तिमि धेरै चलाख हुन नखोज है"

"भन्सार विभागले सरकारभन्दा तस्कर चलाख हुँदा सुन तस्करी नियन्त्रण गर्न नसकेको बताएको छ"

" प्रचण्ड जीले अति चलाखीपूर्ण तरिकाले सुत्त समर्थन फिर्ता लिएर अेालीजी लाइ मुर्गा बनाउनु भयो "

चलाख केटो
https://m.youtube.com/shorts/wfrn4GLPZOY

चलाख व्यापारी र शाेषक राजा
https://nepalipdfstory.blogspot.com/2020/04/story-in-nepali.html?m=1