cast aside

all kidding aside

Used to attempt to state a serious point in a jocular conversation.

brush aside

To disregard, dismiss or ignore something, as unimportant.

cast a chill

To provoke an uneasy feeling which stops a conversation, as by an uncalled act or word.

cast a shadow

To dampen future events.

cast aspersions

To make damaging or spiteful remarks.

cast in concrete

solidly established, very difficult to alter

cast in someone's teeth

To accuse someone of something, or reproach them for it.

cast loose

To unfasten, loosen, or set free.