The 'boring' and 'interesting' group
These adjectives indicate how someone reacts to something or someone. For example, tennis is boring to watch means that tennis is boring for the people watching it.
baffling boring comfortable depressing enjoyable exciting exhilarating fascinating fearsome frustrating inspiring interesting painful pleasing satisfying tedious terrifying
Such matches are boring to watch.
This book is easy and interesting to read.
She found some of the songs painful to write.