脱線行為

だっせんこうい

noun

•

aberration, aberrant behavior, eccentric (erratic) behavior, indulging in an escapade(yojijukugo)

脱	undress, removing, escape from, get rid of, be left out, take off
線	line, track
行	going, journey, carry out, conduct, act, line, row, bank
為	do, change, make, benefit, welfare, be of use, reach to, try, practice, cost, serve as, good, advantage, as a result of