The most common and most likely answer to this crossword clue is the 5 letter word FOIST
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Buddy explains!
The straight part
We know that "Thrust" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case thrust = foist.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 FOIST mean?
FOIST noun- A thief or pickpocket.
- To introduce or insert surreptitiously or without warrant.
- To force another to accept especially by stealth or deceit.
- To pass off as genuine or worthy.
- A light and fast-sailing ship.
- A cask for wine.
- Fustiness; mustiness.