The adjectives you select will convey to the interviewer a few things:
- What you value in yourself
- How well you can describe a situation using a few words
- How quickly you think on your feet.
The only "bad" answer here is to use generic adjectives that don't set you apart or boring, vapid ones that say "He's a muggle." (Obviously, you don't want to get too wild and wooly - "hard-drinking, life of the party, etc..." But an interesting adjective has a lot to commend itself.)
Oh, and you don't need 5 - you just need one really, really good one. (And 4 backups, in case you don't wow them on the first.)
Everybody is "smart," "hard-working," and "creative."
If you choose interesting adjectives and can back them up this is an opportunity to set you apart.
- "I see the problems others don't" (ok, not an adjective, but more specific)
- "Peacemaking" (Oh, interesting - a guy who not only plays well with others, but helps others get along)
- "Thorough" (Hmm. The Detail guy - tell me more)
- "Stick-to-it-ive" (Haven't heard that but I like)
You get the idea - try not to us a buzzword, try not to use the same old lines everyone else does. Really, this is an exercise in vocabulary, creativity, and salesmanship. Have the adjectives before hand, and you'll ace it.
Finally, if you can ascribe an adjective to something people have actually said about you, that earns you "objectively great."