n.[C]

1. 司空見慣的事
   Jet travel is now a commonplace.

   乘噴射機旅行現在是尋常的事。

2. 老生常談；陳詞濫調
3. 【古】備忘紮記

a.

1. 平淡無味的；平凡的，普通的；陳腐的
   The fashionable remarks of today often become the commonplace expressions of tomorrow.

   今天流行的時髦話明天常常成為陳腐之言。

adj.

n.

1. a usual or ordinary thing.
   ▸a trite saying or topic.
2. a passage copied into a commonplace book.