Voluntary : স্বতঃপ্রবৃত্ত; স্বেচ্ছাকৃত; ঐচ্ছিক; বিনা পারিশ্রমিকে কৃত এমন;
Related Words
volu nteer  volumetric  voluntarily  voluntarism  voluntary  volunteer  volunteered  volunteering  volunteers  See Words Also In
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Appropriate Prepositions
Capable of(সক্ষম): He is capable of doing it.
Contemporary of (সমসাময়িক): William Wordsworth was a contemporary for greater efficiency.
Die from (কোন কিছু জন্য মারা যাওয়া): The poor person died from hunger.
Easy of (সরল): The teacher is easy of approach.
Repent of (অনুতাপ করা): I repented of my past.
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Idioms
All at once - (হঠাৎ): I feel terribly sleepy all at once.
In no time (শীঘ্র): He will finish the work in no time.
Milk and honey – (প্রাচুর্য)- He lives with milk and honey.
With a view to (উদ্দেশ্য)- He goes to college with a view to attending the class.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.