She spent the entire afternoon faffing ______ instead of finishing her assignment.

• Complete Sentence: She spent the entire afternoon faffing about instead of finishing her assignment.

• faff about/around (phrasal verb with faff verb)
English Meaning: to spend your time doing a lot of things that are not important instead of the thing that you should be doing.
Bangla Meaning: বিনা কাজে সময় নষ্ট করা; অকারণে ঘোরাঘুরি করা।

Example Sentence:
- I wish you'd stop faffing about and do something useful!

Source: Cambridge Dictionary.