Reliable is an adjective that means consistently good in quality or performance; able to be trusted.
Key characteristics of something or someone that is reliable:
1. Dependable - won't let you down
2. Consistent - performs the same way every time
3. Trustworthy - you can count on it
4. Responsible - takes care of business
Common collocations with reliable:
• Reliable source
• Reliable data
• Reliable friend
• Reliable service