toughestpart
nounUK /ˈtʌfɪst pɑːt/
US /ˈtʌfɪst pɑːrt/
The hardest or most difficult thing to do.
The toughest part of the race was the big hill at the end.
RELATED WORDS
OTHER MEANINGS
2. The most painful or uncomfortable moment.
The toughest part of getting a shot was the waiting.
3. The most important or serious section of something.
The toughest part of the test was the last question.
4. The part that needs the most strength or effort.
The toughest part of the climb came near the top.