hit-or-miss
[ ˌhɪtɔːˈmɪs ]
• as likely to be unsuccessful as successful.
• "most drugs on the market have been found by hit-or-miss methods"
Similar:
haphazard,
disorganized,
undisciplined,
erratic,
unmethodical,
uneven,
careless,
slapdash,
slipshod,
casual,
offhand,
remiss,
cursory,
lackadaisical,
perfunctory,
random,
aimless,
undirected,
indiscriminate,
trial-and-error,
sloppy,
all over the place,
slap-happy,
all over the shop,
