painless

'peinlis

Collins 1

s. requiring little hard work or exertion
a. not causing physical or psychological pain

a. 无痛的, 不痛的
[医] 无痛的

Collins 星级

18,649

BNC 频率

13,959

使用频率

painless 由 pain（痛苦）和后缀 -less（无，缺少）组成。意思是没有痛苦的状态。

例句

1. The dentist assured me that the procedure would be painless.

牙医向我保证这个治疗过程不会痛。

2. She took a painless shot to protect herself from the flu.

她打了一针预防流感，过程没有疼痛感。

3. The new medicine promises to provide painless relief from headaches.

这种新药承诺能无痛缓解头痛。