Advantageous :: Advantageous (a.) Being of advantage; conferring advantage; gainful; profitable; useful; beneficial; as, an advantageous position; trade is advantageous to a nation..
Disadvantageous :: Disadvantageous (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..