erratic (adj.)
- aberrant
- abnormal
- adrift
- afloat
- agnostic
- aimless
- alternating
- ambiguous
- amorphous
- anomalous
- bizarre
- broken
- capricious
- casual
- catchy
- chancy
- changeable
- changeful
- changing
- choppy
- circuitous
- crank
- cranky
- crotchety
- curving
- desultory
- deviant
- deviating
- devious
- dicey
- different
- digressive
- directionless
- disconnected
- discontinuous
- discursive
- disjunct
- disordered
- disorderly
- dispersed
- disproportionate
- divergent
- diversified
- dizzy
- dotty
- doubtful
- doubting
- dubious
- eccentric
- equivocal
- erose
- errant
- exceptional
- excursive
- extraordinary
- fey
- fickle
- fitful
- flaky
- flickering
- flighty
- fluctuating
- formless
- freakish
- frivolous
- funny
- giddy
- gratuitous
- halting
- haphazard
- hesitant
- hesitating
- hit-or-miss
- idiosyncratic
- iffy
- impetuous
- impulsive
- incalculable
- inchoate
- incoherent
- inconsistent
- inconstant
- indecisive
- indirect
- indiscriminate
- infirm
- intermittent
- irregular
- irresolute
- irresponsible
- jagged
- jerky
- kinky
- kooky
- labyrinthine
- maggoty
- mazy
- meandering
- meaningless
- mercurial
- misshapen
- moody
- motley
- mutable
- nonconformist
- nonstandard
- nonuniform
- nut
- nutty
- odd
- out-of-the-way
- outlandish
- patchy
- peculiar
- planetary
- planless
- pluralistic
- polysemous
- promiscuous
- quaint
- queer
- quirky
- ragged
- rambling
- random
- recluse
- restless
- rough
- roundabout
- roving
- scatterbrained
- scrappy
- screwball
- screwy
- senseless
- serpentine
- shapeless
- shifting
- shifty
- singular
- skeptical
- snaky
- spasmodic
- spastic
- spineless
- sporadic
- spotty
- staggering
- straggling
- straggly
- strange
- stray
- straying
- subnormal
- swerving
- touch-and-go
- turning
- twisted
- twisting
- unaccountable
- uncertain
- unclassified
- uncontrolled
- unconventional
- unconvinced
- undependable
- undirected
- undisciplined
- unequal
- uneven
- unfixed
- unforeseeable
- ungraded
- unmethodical
- unnatural
- unordered
- unorganized
- unorthodox
- unpersuaded
- unpredictable
- unprovable
- unreliable
- unrestrained
- unrhythmical
- unsettled
- unsorted
- unstable
- unsteady
- unsure
- unsymmetrical
- unsystematic
- unusual
- unverifiable
- vacillating
- vagrant
- vague
- variable
- variegated
- variform
- various
- varying
- volatile
- wacky
- wandering
- wanton
- wavering
- wavy
- wayward
- weird
- whimsical
- winding
- wishy-washy
- wobbling
- wobbly
- zigzag
