質問: what is the difference between 退屈なパーティ and つまらないパーティ ? what is the difference between 退屈なパーティ and つまらないパーティ ?
回答: i think almost the same. it's quite difficult to tell the diffirence between them. if i had to say then "退屈な(taikutsu na)" expression can emphasize the meaning of "boring" or "monotonous".