際に/際/際は => occasion, time N2
尊敬語 => Honorifics N4
丁寧語 => polite form N4
謙譲語 => Humble form N4
[際「さい」]して/に([際「さい」]し)/に[際「さい」]しての => At the time of A (which starts now).. N2
Time, Situation
に際して => on the occasion of; at the time of ~ N2
は..語で何ですか => What does it mean... N5
Explain
[尊敬語「そんけいご」] => Respectful form of A N4
Honorifics
[謙譲語「けんじょうご」] => Humble form of A, humble form of する verbs N4
Honorifics