to go back in the direction you came from
ফিরে আসা; আগের পথে ফিরে যাওয়া
"We had to turn back because of the heavy rain."
"ভারী বৃষ্টির কারণে আমাদের ফিরে আসতে হয়েছিল।"
to request extra help in a challenging situation
to reverse or reduce the effect of something
to complete something successfully despite difficulties
to continue despite difficulties or fatigue
to combine or mix different elements harmoniously
to prepare yourself for something exciting or challenging