motivational
adj.giving someone a reason to work hard or feel excited about achieving a goal. You use this to describe things like speeches or posters that make people feel more positive.
adj.providing inspiration or incentive to act; designed to stimulate interest or enthusiasm for a particular task or goal.
“She gave a motivational speech to the team.”
“The company hired a motivational speaker to help the employees feel more excited about the new project.”
“While some find motivational posters inspiring, others argue that true professional drive comes from a supportive environment rather than simple slogans on a wall.”
Typically used attributively before a noun.
“What about a new trainer, texting me motivational messages – “let’s go soldier mode!” – at 7am every day?”
From motivation + -al.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.