haz·ard·ous 
(hăzər-dəs)
(hăzər-dəs)adj.
1. Marked by danger; perilous.
2. Depending on chance; risky.
hazard·ous·ly adv.
hazard·ous·ness n.
- unaccommodated
- unaccompanied
- unaccomplished
- unaccountability
- unaccountable
- unaccountably
- unaccounted-for
- unaccredited
- unaccustomed
- unaccustomedly
- unachievable
- unacknowledged
- una corda
- unacquainted
- unaddressed
- unadjusted
- unadorned
- unadulterated
- unadventurous
- unadvertised
- unadvised
- unadvisedly
- unaffected
- unaffectedly
- unaffiliated