Question 1

What does "weaken up" mean?

Accepted Answer

To gradually reduce the strength, power, or resistance of something or someone.

Question 2

How do you use "weaken up" in a sentence?

Accepted Answer

Months of negotiations weakened up the opposing side's resolve.

Question 3

Is "weaken up" formal or informal?

Accepted Answer

"weaken up" is informal — used mainly in casual conversation. Non-standard and rarely used. The particle 'up' adds little semantic value here. Most native speakers would simply say 'weaken' or use 'soften up'. Learners are advised to prefer those alternatives.

weaken up

"up" を含むフレーズ