The most common and most likely answer to this crossword clue is the 8 letter word SINGULAR
I've seen this crossword clue in Financial Times
S
I
N
G
U
L
A
R
More clues leading to the result SINGULAR
- Odd fish perhaps not sharks
- Rum? Just the one
- Strange rulings upset boxing association at first
- A ruling’s remarkable outcome
- Altering a ruling’s exceptional
- Wrong soldier dismissing soldiers? That’s unusual
- Remarkable, as sheep but not goats may be
- Exceptional transport commandered by queens turned up
- Ultimately momentous ruling a criminal finds extraordinary
- Curious, not ending in an S
Buddy explains!

The straight part
We know that "Strange" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case strange = singular.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 SINGULAR mean?
SINGULAR noun- (grammar) A form of a word that refers to only one person or thing.
- That which is not general; a specific determinate instance.
- Being only one of a larger population.
- Being the only one of the kind; unique.
- Distinguished by superiority: peerless, unmatched, eminent, exceptional, extraordinary.
- Out of the ordinary; curious.
- (grammar) Referring to only one thing or person.
- (of matrix) Having no inverse.
- (of transformation) Having the property that the matrix of coefficients of the new variables has a determinant equal to zero.
- (of a cardinal number) Not equal to its own cofinality.
- Each; individual.
- Engaged in by only one on a side; single.