Fig. happy and cheerful; positive and looking toward the future, despite unhappy circumstances. The patient is in good spirits and that will speed her recovery.Tom wasn't in very good spirits after he heard the bad news.
Also, in high spirits. Happy, cheerful, as in Jane was in good spirits today. [Early 1700s] However, high spirits also can indicate liveliness and vivacity, as in The children were in high spirits at the prospect of a trip to the circus.