John Koening spent about a decade putting words to feelings that many of us experience but don't know how to describe. Feelings like "the loneliness of having to keep a secret" ("hiddled" (adj.)), "the hidden vulnerability of others" ("socha" (n.)), and "the sorrow of imagining the wealth of knowledge forever lost to history" ("kerisl" (n.)). 

Some definitions are brief and to the point. Others are short essays that help you dig deep into the feeling. All are sorrowful in one way or another, which is why I took so long to read it. I'd read a few pages now and then. I thoroughly enjoyed them, but reading too much at once left me sorrowful and tired. 

This is a great book to dip in and out of or to use to define that undefinable feeling your having.