Novel herbicides are provided.A haloalkylsulfonanilide derivative represented by the formula (1) or an agrochemically acceptable salt thereof:the formula (1):wherein A is -C(R7)(R8)- or -N(R9)-,W is an oxygen atom or a sulfur atom, n is an integer of from 1 to 4, R1 is halo C1 -C6 alkyl, R2 is a hydrogen atom, C1 - C6 alkyl or the like, each of R3 and R4 is independently a hydrogen atom, C1 - C6 alkyl or the like, each of R5, R6, R7 and R8 is independently a hydrogen atom, a halogen, C1 - C6 alkyl or the like, R9 is a hydrogen atom, C1 - C6 alkyl or the like, and X is halogen, C1 - C6 alkyl or the like.