YOU SAID:

i have successfully decapitated this frog

INTO JAPANESE

私はこのカエルを首尾よく断頭した

BACK INTO ENGLISH

I declined this frog successfully

INTO JAPANESE

私はこのカエルをうまく拒絶した

BACK INTO ENGLISH

I successfully rejected this frog

INTO JAPANESE

私はこのカエルをうまく拒絶した

BACK INTO ENGLISH

I successfully rejected this frog