The most common and most likely answer to this crossword clue is the 6 letter word MIGHTY
I've seen this crossword clue in Independent
M
I
G
H
T
Y
More clues leading to the result MIGHTY
- Powerful male, 80, with energy draining
- Extremely minute number dropping ecstasy
- Mass and energy extracted from a number having strength
- Following scrap, you say your leader is fit for heavy lifting?
- Stout from May to end of July
- May, in past, by taking British out, showing strength
- Little fellow — in EastEnders he sounded big
- Strong, masculine and significant, dismissing our side
- Large number blowing top after start of match
- The strong may conceivably end in misery
Buddy explains!

The straight part
We know that "The strong" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case the strong = mighty.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.
What does MIGHTY mean?
MIGHTY noun- A warrior of great strength and courage.
- Very strong; possessing might.
- Very heavy and powerful.
- Very large; hefty.
- Accomplished by might; hence, extraordinary; wonderful.
- Excellent, extremely good.
- Very; to a high degree.