Yes, needless is a Scrabble word!

Verb

1. Goad or provoke,as by constant criticism

2. Prick with a needle

Adjective

1. Unnecessary and unwarranted

Noun

1. The leaf of a conifer

2. A slender pointer for indicating the reading on the scale of a measuring instrument

3. A sharp pointed implement (usually steel)

4. A stylus that formerly made sound by following a groove in a phonograph record