1. sufficient in quantity or quality to meet a requirement or need
2. barely satisfactory or acceptable; not outstanding

Examples

• The hotel room was adequate for our short stay.
• She has adequate skills for the job but lacks experience.
• The budget provides adequate funding for basic needs.
• His performance was adequate, though not exceptional.
• We need adequate time to complete the project properly.
• The shelter provided adequate protection from the storm.
• Her explanation was adequate to answer most questions.