The Word Tree · শব্দবৃক্ষ
Learn one root.
Unlock a family of words.
Rafiqul Islam's method, now an app. 310 Latin and Greek roots open up 1,250 words — and every single one arrives with its Bangla meaning.
- No card needed
- Built for the phone
- Works in Bangla and English
- 310
- word roots
- 1,250
- core words
- 3,717
- bonus words
- 31
- levels
How it works
One root a page, the way the book teaches it
- 01
Learn the root
One page, one root — where it came from, what it means, and its Bangla sense in a line.
- 02
Unlock the family
Whether you meet it inside con-, de- or in-, the same root opens a whole family of words.
- 03
Practise what you forget
Cards come back exactly when they are about to slip — not on a fixed schedule.
What's inside
A reference book that practises with you
Bangla on every word
Nothing is left as an English gloss. Every one of the 5,000 words carries its own Bangla meaning.
The prefix, spelled out
con + struct → construct. You see how the word was built, so you can build the next one yourself.
Three ways to practise
Flashcards, English → বাংলা and বাংলা → English, all drawn from the same root.
The book's own exams
All 31 level exams, exactly as printed — 20 questions each, marked, with the answer key.
Find any word
Search 310 roots and 4,967 words in English or Bangla, and jump straight to the root page.
A word journal
Log the words you meet in the wild, note where you saw them, and keep them with their root.
Five volumes, one tree
Levels 1–15 build the foundation. Levels 16–31 finish the tree.
Every level is ten roots, a review table, an exam and a journal page — exactly as the printed books are set. Nothing is cut, and nothing is re-written.
The author
Rafiqul Islam
English-language educator from Dhaka. He has taught English at secondary and higher-secondary level, lectured at college level, and trained teachers as a Master Trainer for the Higher Secondary Education Board. He is Assistant Principal of At-Taqwa School & Tahfeez, and studied English Language & Literature and Applied Linguistics at Jagannath University.
Questions
Before you start
Is it the whole book?
Yes. All five volumes — 31 levels, 310 roots, 1,250 core words and 3,717 bonus words — with the review tables, the exams and the answer keys.
Do I need to know English already?
No. Level 1 starts with ten everyday Latin roots and every word is given in Bangla and plain English, so you can begin from the first page.
Does it work on my phone?
It is built for the phone first. Add it to your home screen and it opens like an app, with your progress saved to your account.
Is it free?
Creating an account is free and there is no card. Your place, your streak and your exam scores follow you to any device.
Start at level 1
Ten roots today. A thousand words by the end.
Free, no card, and your progress follows you from phone to laptop.
Create your free account