adj. small·er, small·est

2. Limited in importance or significance; trivial: a small matter.

3. Having limited position, influence, or status; minor: "A crowd of small writers had vainly attempted to rival Addison" (Thomas Macaulay).

4. Unpretentious; modest: made a small living; helped the cause in my own small way.

5. Not fully grown; very young: a small child.

6. Narrow in outlook; petty: a small mind.

7. Having been belittled; humiliated: Their comments made me feel small.

8. Diluted; weak. Used of alcoholic beverages.

9. Lacking force or volume: a small voice.

10. Lowercase: Type the password in small letters.

adv.

1. In small pieces: Cut the meat up small.

2. Without loudness or forcefulness; softly.

3. In a small manner.

n.

1. A part that is smaller or narrower than the rest: the small of the back.

Synonyms: small, diminutive, little, miniature, minuscule, minute², petite, tiny, wee¹
These adjectives mean being notably below the average in size or magnitude: a small house; diminutive in stature; little hands; a miniature camera; a minuscule amount of rain; minute errors; a petite figure; tiny feet; a wee puppy.