Harkers can have several synonyms depending on the context of usage. If we are referring to a person who sells or cries out goods, the synonyms can be crier, street vendor, seller, hawker or peddler. For example, a hawker selling fresh fruits and vegetables on a street would be called a street vendor. Similarly, if we are referring to a person who listens attentively, the synonyms can be listener, hearer, or attentive listener. For instance, a person who is always listening to others' problems can be called an attentive listener. In summary, the synonyms for the word harkers vary based on the usage and situation.