Not cheerful.

Not willing; grudging: as, uncheerful service.

adjective. Not cheerful.

adjective. causing sad feelings of gloom and inadequacy

"The speaker of these stunning poems appears heartbroken and haunted yet filled with abrupt passion and resistance to loss -- uncompromising, uncheerful but "acquainted with the night" -- an insomniac's rhapsody."

blue  dark  dingy  disconsolate  dismal  

danske  deep-voiced  emphatic  fourth-degree  heartier  

Cassandra-like  Cassandran  Cassandrian  cheerless  cynical