The word 'Fledgling' is both -

• Fledgling (adjective)
English Meaning: New and not experienced.
Bangla Meaning: নতুন এবং অনভিজ্ঞ। 

Synonyms: Arising (উদ্ভূত), Beginning (প্রারম্ভ), Growing (বৃদ্ধিমূলক), Novice (শিক্ষানবীস), Punk (অকেজো), Trainee (প্রশিক্ষনার্থী)।
Antonyms: Declining (পতনশীল), Mature (পরিপক্ব করা বা হওয়া), Old Timer (অভিজ্ঞ), Veteran (দক্ষ, বর্ষীয়ান), Guru (গুরু)। 

Other Forms: Fledgling [ফ্লেজলিং] (noun) (মাত্র উড়তে শিখেছে এমন) উদ্‌গতপক্ষ পাখি; A young bird that has grown feathers and is learning to fly.

Example Sentence:
1. You are the leader of the opposition in this emerging, fledgling democracy.
2. At hockey, he's still a fledgling and needs to work on his basic skating skills.