Unerring : নির্ভুল, নিশ্চিত, অব্যর্থসন্ধান;
Related Words
unerring  unerringly  See Words Also In
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Appropriate Prepositions
Antipathy to/towards (ঘৃনা): I have a strong antipathy to smoking.
Appointment with (সাক্ষাতের সময়): He has an appointment with the minister at 10:00 am.
Despair of (নিরাশ হওয়া): Do not despair of further improvement.
Dwell in (বাস করা): He dwells in a tall apartment.
Refrain from (বিরত রাখা বা থাকা): I refrained him from smoking.
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Idioms
All along - (সব সময়): I was present in the meeting all along.
Eat humble pie (অপমান হজম করে ক্ষমা চাওয়া): The manager had to eat humble pie before his employees.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Wild goose chase (useless pursuit, পন্ডশ্রম) —Do not waste time in wild goose chase.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.