The correct spelling of "ised responsible for" is "authorized responsible for." The sound in "ised" is pronounced as /aɪzd/ in IPA phonetic transcription, which is a voiced "s" sound followed by the "d" sound. This spelling mistake might occur due to confusion between the past tense "-ised" and the correct past tense "-ized." "Authorized" is the correct spelling for this context, meaning someone has been given the official approval or permission to be responsible for something.