• The synonym of the word 'Quaint' is 'Bizarre '.

• Quaint (adjective)
English Meaning: Attractive because of being unusual and esp. old-fashioned:
Bangla Meaning: অদ্ভুত কিন্তু আকর্ষক; খেয়ালি।
Example sentence:
He was wearing a quaint dress.
In Spain, we visited a cobblestone plaza with quaint little cafés around its perimeter.

• Bizarre (adjective)
English Meaning: Very strange and unusual:
Bangla Meaning: অদ্ভুত; বিচিত্র; উদ্ভট।
Example sentence: That party was too bizarre for me!

• অপশনে উল্লিখিত অন্য শব্দগুলোর অর্থ -
• Typical (adjective)
English Meaning: Having the distinctive qualities of a particular type of person or thing.
Bangla Meaning: নমুনা বা আদর্শস্বরূপ; প্রতিনিধিত্বকারী; বৈশিষ্ট্যসূচক।
Example sentence: He brushed the incident aside with typical good humour

• Prosaic (adjective)
English Meaning: Having or using the style or diction of prose as opposed to poetry; lacking imaginativeness or originality.
Bangla Meaning: গদ্যময়; গতানুগতিক; বিরস
Example sentence: Prosaic language can't convey the experience.

• Modern (adjective)
English Meaning: Relating to the present or recent times as opposed to the remote past.
Bangla Meaning: বর্তমান বা সাম্প্রতিক কাল সম্বন্ধী; আধুনিক; অধুনা; অধুনাতন
Example sentence: We're in the very modern-looking building opposite the station.

Source:
1. Cambridge Dictionary.
2. Oxford Learner's Dictionary.
3. Accessible Dictionary by Bangla Academy.