software whose usefulness is reduced because of the excessive disk space and memory it requires:a nasty piece of cross-platform bloatware that’s in serious need of a total overhaul
unwanted software included on a new computer or mobile device by the manufacturer:users must initially contend with the usual bevy of bloatware (unnecessary toolbars, games of questionable value)
bloatware in other Oxford dictionaries
Definition of bloatware in the US English dictionary