The word 'Felicitous' is -

• Felicitous (adjective)

English Meaning: Well-chosen or suited to the circumstances.
Bangla Meaning: (আনুষ্ঠানিক) (শব্দ, মন্তব্য ইত্যাদি প্রসঙ্গে) সুনির্বাচিত; সুখপূর্ণ; মনোরম।

Synonyms:
Suitable (উপযোগী),
Appropriate (যথাযথ),
Relevant (প্রাসঙ্গিক),
Palatable (সুস্বাদু),
Dulcet (মধু)।

Antonyms:
Inappropriate (অনুপযোপী),
Unfortunate (দুর্ভাগ্যজনক),
Unwelcome (অবাঞ্চিত),
Disagreeable (অসম্মত)।

Other Forms:
- Felicitously (adverb);
- Felicitate (verb transitive) felicitate somebody (on/upon something) (আনুষ্ঠানিক) অভিনন্দিত করা।
- Felicitation (noun) অভিনন্দন; অভিনন্দিতকরণ।

Example Sentence:
1. Conceptually that was quite accurate, even if it was not the most felicitous choice of words.
2. The combination of domestic arrangements with professional ambitions was not a felicitous one.

Source: Lecture.