By what rule have I divided these words into the four groups below?
Elephant, Benedict
Fiend, Hell, Child
Cat, Life, Child
Human, Lymph
Note: I adapted this from questions (answers?) on last night's Jeopardy!, so if you saw it, don't post the answer (question?).
* medic, exam
* shrew, self
* sportsman
* ????
- elephantine, benedictine
- fiendish, hellish, childish
- catlike, lifelike, childlike
- humanoid, lymphoid
I didn't see the show or anything, but Eduardo's comment was an excellent hint. His first example is misleading, though. By using "medic" and "exam" in the first category, he sloughs off the adjective component of the rule. Doing so is misleading for the purposes of discovering the pattern, since you could otherwise use the roots to make words that lead to the wrong conclusion (e.g., medical, medicate, examination, example).
elephantine and benedictine
fiendish, hellish and childish
catlike, lifelike, and childlike
humanoid and lymphoid
(1) -ine
(2) -ish
(3) -like
(4) -oid
And no, I did not watch jeopardy