Unacquainted : অপরিচিত; অপরিজ্ঞাত; অজ্ঞাত; অনভ্যস্ত; অবিদিত; অনভিজ্ঞ;
Related Words
unaccented  unaccounted  unaccountedfor  unacquainted  unchained  uncinate  uncommitted  uncontested  uncounted  unexamined  unjaundiced  See Words Also In
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Appropriate Prepositions
Adequate to(সমানুপাতিক): The salary, he gets, is not adequate to the volume of work he has to do.
Free from (মুক্ত): He is now free from danger.
Full of (পরিপূর্ণ): Our Rivers are full of fishes.
Greed for (লোভ): He has an indomitable greed for wealth.
Hinge on/upon (নির্ভর করা): The whole matter hinges upon this clue.
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Idioms
A bed of roses - (সুখকর অবস্থা): Life is not a bed of roses.
At a snail's pace (very slowly – খুব ধীর গতিতে) The economy of Bangladesh is growing at a snail’s pace.
At liberty (free-মুক্ত-adj.) They are at liberty to go anywhere.
Head and ears (সম্পূর্ণরূপে): He is over head and ears in debt.
Look into something (তদন্ত করা- investigate) - The manager looked into the matter.