Unthankful : অকৃতজ্ঞ;
Related Words
unthankful  unthankfulness  unthinkable  See Words Also In
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Appropriate Prepositions
Abide in(বাস করা): I abide in Dhaka with my family.
Answerable to (কারো কাছে জবাবদিহিতা করা): He is not answerable to anybody for his mistake.
Enter into (কোনো কিছুতে আবদ্ধ হওয়া): pma entered into a new agreement.
Rejoice at/in (আনন্দ করা): Everybody rejoiced at/in his success.
Repent of (অনুতাপ করা): I repented of my past.
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Idioms
Bring to light (disclose-প্রকাশ করা) The police brought the secret to light.
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
In cold blood (ঠান্ডা মাথায়): They committed this murder in cold blood.
Part and parcel (অবিচ্ছেদ্য অংশ): Education is part and parcel to build a civilized nation.
Take to one's heels (to run away, পালানো)- They took to their heels when they saw the policeman approaching.