The term 'express forcefully' can be summarized by the word 'ASSERT, ' which is a six-letter word. ASSERT means to state something confidently and firmly, often in a way that shows determination. It is often used to emphasize a point or opinion, and it can also be used to defend one's rights or beliefs. Asserting oneself is an important part of communication, and it can help to ensure that one's message is heard and understood.