Useless : অনাবশ্যক; অপ্রয়োজনীয়;
Related Words
use less  useless  useless person  uselessly  uselessness  See Words Also In
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Appropriate Prepositions
Abide by(মেনে চলা): We must abide by the rules of discipline.
Acceptable to(গ্রহণযোগ্য): Such behavior is just not acceptable in this school.
Agree to(ব্যক্তি ছাড়া অন্যকিছুর সাথে একমত হওয়া): We cannot agree to your proposal.
Convenient to(সুবিধাজনক): The work is convenient to your nature.
Devoted to (মনোযোগী): He is devoted to music.
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Idioms
In one’s teens (তের থেকে উনিশ বছর বয়সের মাঝে): She is yet in her teens.
Out of sorts (সামান্য অসুস্থ): The baby is out of sorts after playing.
Pick one’s pocket (পকেট মারা)— He tried to pick my pocket.
Slip of the tongue (বলায় সামান্য ভুল): This is a slip of the tongue; don’t pay much stress on it.
See to (বিবেচনা করা)— Can you see to it that everyone gets a copy of this memo?