1. (a.) Having good qualities in the highest degree; most good, kind, desirable, suitable, etc.; most excellent; as, the best man; the best road; the best cloth; the best abilities.

2. (a.) Most advanced; most correct or complete; as, the best scholar; the best view of a subject.

3. (a.) Most; largest; as, the best part of a week.

4. (n.) Utmost; highest endeavor or state; most nearly perfect thing, or being, or action; as, to do one's best; to the best of our ability.

5. (superl.) In the highest degree; beyond all others.

6. (superl.) To the most advantage; with the most success, case, profit, benefit, or propriety.

7. (superl.) Most intimately; most thoroughly or correctly; as, what is expedient is best known to himself.

8. (v. t.) To get the better of.