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out-

1XX used to form nouns and adjectives from verbs that are followed by 'out' :
an outbreak of flu (=from 'break out')
outspoken comments (=from 'speak out')
an outbreak of flu (=from 'break out')
outspoken comments (=from 'speak out')2 [in nouns and adjectives] outside or beyond something :
an outbuilding (=small building away from the main building)
outlying areas (=far from the centre)
an outbuilding (=small building away from the main building)
outlying areas (=far from the centre)3 [in verbs] being or becoming bigger, further, greater etc than someone or something else :
He's outgrown his clothes (=become too big for them).
She outlived her brother (=he died before her).
He's outgrown his clothes (=become too big for them).
She outlived her brother (=he died before her).4 [in verbs] doing better than someone, so that you defeat them :
I can out-argue you any day.
She outran him.
I can out-argue you any day.
She outran him.