What does "solid" mean here? Can I use "solid" to something that's not an object?
Native speaker’s answer
Rebecca
Yes, "solid" is also used as an adjective to refer to people, especially in the assessment of specific abilities. It means something similar to "good," "decent," "dependable," or "reliable." The speaker has used "solid" to state that the agent is good at her job (dependable), but is not good at working with others. Ex: John is not an aggressive player, but he plays solid defense. Ex: Alice is a solid team member.