The most common and most likely answer to this crossword clue is the 5 letter word THINK
T
H
I
N
K
More clues leading to the result THINK
- Feeble king to use his brain
- & 26 Consider Brown to lead Keir’s first problem-solving group
- Fancy slender king
- Believe the queen is fat? Just the opposite
- Unconvincing conclusion reached by weak judge
- IBM device is suspect
- Hold narrow edge of knife
- Imagine gaunt king
- Some growth in knowledge is deliberate
- Initially kept on poor judge
Buddy explains!

The straight part
We know that "suspect" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case suspect = think.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 THINK mean?
THINK noun- An act of thinking; consideration (of something).
- To ponder, to go over in one's head.
- To communicate to oneself in one's mind, to try to find a solution to a problem.
- To conceive of something or someone (usually followed by of; infrequently, by on).
- To be of opinion (that); to consider, judge, regard, or look upon (something) as.
- To guess; to reckon.
- To plan; to be considering; to be of a mind (to do something).
- To presume; to venture.
- To seem, to appear.