"Difficult clients" refers to customers or individuals who are challenging or hard to please, often requiring extra effort or patience to work with or satisfy their needs. Full definition
Hiring managers are looking for friendly, organized workers who can handle difficult client situations with ease. (resumebuilder.org)
Your Firm App was designed with the most difficult client in mind. (yourfirmapp.com)
My colleagues frequently refer friends and family members to me as well as difficult clients, in addition, I work well with couples. (psychologytoday.com)