Flustrate, Fluster, and Frustrate

Flustrate (and its often said derivative flustrated) is not a word. It seems to be combined from the words fluster and frustrate. Fluster means to agitate or confuse someone and frustrate means to prevent something from happening or to cause someone to feel upset.

• Example: You need to complete the work on time without getting flustered.
• Example: This Spanish test is going to frustrate me to no end.

Memorization tip: Never, under any circumstances, use flustrate or flustrated.