The Word Museum is a collection of words that have gone into disuse. Some of these words are absolutely marvellous. Rather than quote the entire book, I've selected a word for each letter of the alphabet.
abracadabrant - marvellous or stunning
barley-child - a child born in wedlock but in the first six months of marriage
chaser - a ram that has only one testicle
deosculation - kissing
extranean - an outsider
flamfoo - a gaudily dressed female
gallywow - a man destitute of power of begetting children
haggersnash - a spiteful person
infradig - below or beneath one's dignity
jannocks - fairness
kiddliwink - a small shop
leachcraft - the art of medicine or surgery
mastigophorer - a fellow worthy of being whipped
nicknackitarian - a dealer of curiosities
ogerhunch - any frightful or loathsome creature
papmeat - milk for babies
quignogs - ridiculous notions or conceits
repurple - to make purple again
sand-knocker - a man who grinds sandstone into grit
teaty-wad - a small portion of moist sugar tied up in a rag of linen of the shape and size of a woman's nipple
umstroke - the edge of a circle
vorago - gulf
walapang - to disguise oneself in order to commit theft
xanthodont - having yellow teeth
yesterfang - that which was taken, captured, or caught on the previous day
zythepsary - a brew house