The most common and most likely answer to this crossword clue is the 10 letter word REDUNDANCY
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More clues leading to the result REDUNDANCY
- Laying off workers embarrassed humanitarian body — and shocked disheartened charity
- Notice incredibly rude daughter interrupting woman
- Notice tautology?
- Marching Orders for leftist and German woman, not leader
- Cranny dude refurbished is superfluous
- Sadly cry and end up without power, showing uselessness
Buddy explains!

The straight part
We know that "uselessness" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case uselessness = redundancy.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
Crossword Answer definitions
REDUNDANCY noun- The state of being redundant
- A superfluity; something redundant or excessive; a needless repetition in language
- Duplication of components or circuits to provide survival of the total system in case of failure of single components.
- Duplication of parts of a message to guard against transmission errors.
- The state of being unemployed because one's job is no longer necessary; the dismissal of such an employee; a layoff.
- Surplusage inserted in a pleading which may be rejected by the court without impairing the validity of what remains.