Showing no intelligence or imagination -

• Vapid (adjective) 
English Meaning: Showing no intelligence or imagination.
Bangla Meaning: নীরস; বিস্বাদ; বিরস; নিস্তেজ; নিস্প্রাণ: Vapid conversation.

Synonyms: Dull (নিস্তেজ), Insipid (নিষ্প্রভ), Boring (বিরক্তিকর), Flavorless (স্বাদহীন), Bland (মৃদু)।
Antonyms: Brilliant (উজ্জল), Exciting (উত্তেজনাপূর্ণ), Interesting (আকর্ষণীয়)।  

Other Forms: 
- Vapidly (adverb) বিরসভাবে। - Vapidness (noun). 
- Vapidity [ভাপিডাটি] (noun) [uncountable noun] নীরসতা; বিরসতা; (plural vapidities) বিস্বাদ/বিরস মন্তব্য।

Example Sentence: 
1. He's attractive, but vapid.

Options,
- Tryst: A meeting between two people who are having a romantic relationship, especially a secret one.
- Noxious: Injurious to physical or mental health. 
- Replenish: Replenish something (with something) to make something full again by replacing what has been used

Source: Website Lecture.