Source : Webster's Revised Unabridged Dictionary (1913)

Troublous \Trou"blous\, a.
   Full of trouble; causing trouble. ``In doubtful time of
   troublous need.'' --Byron.

         A tall ship tossed in troublous seas.    --Spenser.

Source : WordNet®

troublous
     adj : full of trouble; "these are troublous times"