Usage:An issue extraneous to the debate
The ballet struck me as extraneous and somewhat out of keeping with the rest of the play
Water free of extraneous matter
Usage:The prices of essential commodities are showing an upward trend.
Usage:computer chess games are getting cheaper all the time; furthermore, their quality is improving
Usage:I reserved an upper birht totravel comfortable in the train.
Usage:The fore skins of the organs should be cleaned regularly.