Up and down : ইতস্তত; একবার এদিক একবার ওদিক;
Related Words
up and doing  up and down  up-and-down  See Words Also In
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Appropriate Prepositions
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Call on(কারও সাথে দেখা করা): I called on him in his office.
Comply with(মেনে নেওয়া): The clerks must comply with the orders of their officer.
Drop to (নিচে নামানো): Asif dropped his voice to a whisper.
Work for (কারো জন্য কাজ করা): She works for a construction company.
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Idioms
Call to mind (স্মরণ করা): I cannot call to mind your cell number.
Get rid of (মুক্তি পাওয়া): Try to get rid of the rogue.
Hard nut to crack (কঠিন সমস্যা): The problem of adult education is really hard nut to crack.
Now and then (মাঝে মাঝে): He comes here now and then.
Scapegoat (উদোর পিন্ডি বুধোর ঘাড়ে)—He was made scapegoat of the incident.