regardless

形容词 regardless:

1. (usually followed by `of') without due thought or consideration
   同义词：careless

副词 regardless:

1. in spite of everything; without regard to drawbacks
   同义词：irrespective, disregardless, no matter, disregarding

1. She is determined to do regardless of all consequences.
   她不顾一切后果，决心这样做。
2. I protested, but she carried on regardless.
   我极力反对，但她置之不理仍一意孤行。
3. They decorated the house regardless of cost.
   他们不惜工本装修这栋房子。
4. All our proposals were rejected, regardless of their merits.
   我们所有的建议都遭到拒绝，不管这些建议的价值如何。

re.gard.less

adv.（副词）
In spite of everything; anyway:
不顾后果；无论如何：
例句：
continues to work regardless.
不顾后果地继续工作

adj.（形容词）
Heedless; unmindful.
毫不在意的；毫不顾及的

【引伸】
regard.lessly
adv.（副词）
regard.lessness
n.（名词）