boleśnie

In a sentence

• Chłopiec boleśnie uderzył się o stół.

  The boy painfully hit himself on the table.

  Here, 'boleśnie' describes the manner in which the action (hitting) was experienced, emphasizing the resultant pain.

• Boleśnie odczuliśmy stratę ukochanego psa.

  We painfully felt the loss of our beloved dog.

  In this sentence, 'boleśnie' conveys an emotional intensity related to the feeling of loss.

• Sukces drużyny był boleśnie trudny do osiągnięcia.

  The team's success was painfully difficult to achieve.

  Here, 'boleśnie' is used metaphorically to describe the significant difficulty endured during the process.