/ ˈkɒmənpleɪs; NAmE ˈkɑːm-/ adjective , noun
■ adjective
done very often, or existing in many places, and therefore not unusual :
Computers are now commonplace in primary classrooms.
■ noun ( formal )
1.
[ usually sing. ] an event, etc. that happens very often and is not unusual
2.
a remark, etc. that is not new or interesting
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WORD ORIGIN
mid 16th cent. (originally common place ): translation of Latin locus communis , rendering Greek koinos topos general theme.