1. in a way that is not straight or direct; by a roundabout route or method
2. not in a clear or obvious way; by implication or suggestion
3. through an intermediate person, thing, or cause rather than immediately

Examples

• The sunlight entered the room indirectly through the frosted glass.
• She indirectly suggested that he should look for another job.
• The news reached us indirectly through a mutual friend.
• His comments indirectly criticized the company’s policies.
• The medication works indirectly by boosting the immune system.
• We learned about the problem indirectly from other sources.
• The river flows indirectly to the sea through several tributaries.