The clumsy waiter dropped the tray and apologized as drinks spilled across the floor.

The clumsy in our group accidentally knocked over the cake at the party.

The clumsies tripped over the rug and knocked over three glasses during the party.

I suddenly got the clumsies and spilled my coffee all over the report right before the meeting.

Her clumsinesses during the rehearsal—spilled coffee, missed cues, and tangled sheets—eventually became endearing to the rest of the cast.

His clumsiness was obvious when he dropped the tray and sent the dishes scattering across the floor.