sia-sia

answer (one's) purpose Idiom

at cross purposes

have opposite ways to do something, opposing goals They are at cross purposes and are always arguing about what to do.

on purpose

intentionally I think that she spilled the drink on purpose.

serve the purpose

do the job, accomplish the task If you don't have an organ, a piano will serve the purpose.

accidentally-on-purpose

seemingly accidental but with veiled malice or harm

for the purpose of

with the object of； with the intention of为…目的
For the purpose of building our country into a great socialist state，all of us must work hard．为了把我国建成一个伟大的社会主义国家，我们一定要努力工作。
He came here for the purpose of collecting material for his research．他到这里来，目的是为了他的研究搜集资料。
He has gone abroad for the purpose of studying chemistry．他已经到国外去学化学了。
The yound man jumped into the river for the purpose of saving the drowning child．那个年轻人跳入河中为的是救落水的孩子。

to little/no purpose

of no avail毫无结果
He worked to no purpose．他只是徒劳而已。
We spoke to little or no purpose．我们说话作用不大或者毫无作用。

to little purpose

of no avail毫无结果
He worked to no purpose．他只是徒劳而已。
We spoke to little or no purpose．我们说话作用不大或者毫无作用。

to no purpose

of no avail毫无结果
He worked to no purpose．他只是徒劳而已。
We spoke to little or no purpose．我们说话作用不大或者毫无作用。

for all practical purposes

Idiom(s): for all practical purposes

Theme: ESSENTIALLY - BASICALLY

as might be reasonably expected; essentially.
• For all practical purposes, this is simply a matter of right and wrong.
• This should be considered final, for all practical purposes.

for all intents and purposes

Idiom(s): for all intents and purposes

Theme: ESSENTIALLY - BASICALLY

virtually; practically speaking. (Sometimes this expression has very little meaning. Fixed order.)
• He entered the room, looking for all intents and purposes as if he would burst into song.
• She said that for all intents and purposes she had completed her assignment.