impactful
Impactful (adjective) means having a strong effect on people or on a situation. Example: “The most impactful change was simply cutting the waiting time in half.”
How to use impactful
Learner’s notesIn plain EnglishIt makes a big difference or leaves a strong impression.
Very common in business and marketing writing; avoid it in formal or literary prose, where it grates on some readers.
If you are writing for a critical reader, swap in a more precise adjective — impactful is one of the most complained-about words in corporate English.
Trace the full origin ↓Fill the gap
Can you complete this real example?
The most _____ change was simply cutting the waiting time in half.
Etymology
Formed from impact plus the suffix -ful.