• (a.) Attended with disadvantage; unfavorable to success or prosperity; inconvenient; prejudicial; -- opposed to advantageous; as, the situation of an army is disadvantageous for attack or defense. Found on http://thinkexist.com/dictionary/meaning/disadvantageous/
Dis·ad`van·ta'geous adjective [ Confer French désavantageux .] Attended with disadvantage; unfavorable to success or prosperity; inconvenient; prejudicial; -- opposed to advantageous ; as, the situation of an army is disadvantageous for attack or defense. « Even in the ... Found on http://www.encyclo.co.uk/webster/D/73