Let's say that I'm doing my daily labor, and it's a pretty hard work in general.
And someone offer to help me, without I that asked for it, and surprisingly that person invested in that job a lot more than I could imagine.
Could it be possible that my only option to gratitude him is to say something like:
Thank you for your effort?

What I really want to know, if there is any better way to rephrase the word "effort" to something more suitable that can describe how much I appreciate what he had done.

closed as primarily opinion-based by anongoodnurse, tchrist, Hellion, Lynn, Andrew Leach Mar 29 '15 at 8:24

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

  • You should never follow the word "the" with the word "your". Choose one. – Parthian Shot Mar 28 '15 at 23:49
  • @ParthianShot oops, that was unintentionally typo. sorry about that. – Hashirama Senju Mar 28 '15 at 23:52
  • 2
    You could say, "Thanks - I couldn't have done it without you." (It's a common expression.) – Oldbag Mar 29 '15 at 0:12
  • @Oldbag The thing is, I could do it without him. But still, I wanted him to know that is wasn't taken for granted. – Hashirama Senju Mar 29 '15 at 0:16
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    The generic would be "Thank you for your assistance." But if an extraordinary amount of effort was expended by the other party you should go beyond using a stock phrase and do your best in your own words to express your gratitude. Your own words are appreciated more than a canned response, no matter how fancy. – Hot Licks Mar 29 '15 at 0:32

Truly, the only thing wrong with your statement is its connotation in some circumstances, or in some geographic areas. In situations, the sentence may be inferred as, "Thank you for your effort, (even though you didn't help all that much).

Hot Licks is spot on (see comments). You don't have to exaggerate (as in when you could have handled it by yourself). Say something that reflects your true appreciation:

"Thank you for your contribution to this project. Your investment in time and energy was far beyond what I could/would have asked for." (in your words, of course).

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