English One-Syllable words fall into over 250-word families. A word family is a group of words having the same basic structure. An example of a word-family is ail family. This family includes the words, ail, bail, brail, fail, flail, frail, grail, hail, jail, mail, nail, pail, quail, rail, sail, snail, etc. The author made a study in connection with the Splinters Online Word game that will soon go live.