YOU SAID:
Something rather long dull and boring
INTO JAPANESE
やや鈍くて退屈な何か
BACK INTO ENGLISH
Somewhat dull and something boring
INTO JAPANESE
やや退屈でつまらないもの
BACK INTO ENGLISH
Somewhat boring and boring
INTO JAPANESE
やや退屈で退屈
BACK INTO ENGLISH
Somewhat boring and boring
That didn't even make that much sense in English.