1. Certain to be successful
   "a sure-fire way to get rich"

See also: successful

• unconscionably
• unconscious
• unconscious mind
• unconscious process
• unconsciously
• unconsciousness
• unconsecrated
• unconsidered
• unconsolable
• unconsolidated
• unconstipated
• unconstitutional
• unconstitutionally
• unconstrained
• unconstraint
• unconstricted
• unconstructive
• unconsumed
• unconsummated
• uncontaminated
• uncontaminating
• uncontested
• uncontrived
• uncontrollable
• uncontrollably