purposeless (adj.)

• aimless
• bootless
• casual
• causeless
• desultory
• discursive
• disorganized
• empty
• feckless
• garbled
• good-for-nothing
• haphazard
• hit-or-miss
• impotent
• inane
• indiscriminate
• ineffective
• ineffectual
• inexplicable
• insignificant
• irregular
• meaningless
• mindless
• nonsensical
• null
• phatic
• pointless
• promiscuous
• rambling
• random
• scrambled
• senseless
• stochastic
• stray
• superfluous
• unaccountable
• unavailing
• undirected
• unhelpful
• unmeaning
• unmotivated
• unorganized
• unplanned
• unprofitable
• useless
• vacuous
• wandering
• worthless