to not feel confident or certain about something
কোনো বিষয়ে আত্মবিশ্বাসী বা নিশ্চিত না হওয়া
"I’m unsure of what to say in that situation."
"ওই পরিস্থিতিতে কী বলব তা নিয়ে আমি অনিশ্চিত।"
to meet someone unexpectedly
to carefully examine reasons behind failure
to start growing or succeeding quickly in terms of money
to become upset or angry about something
to plan in detail how something will happen
to become visibly happy or excited when seeing someone or so...