The most common and most likely answer to this crossword clue is the 4 letter word SOAK
S
O
A
K
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The straight part
We know that "Steep" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case steep = soak.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 SOAK mean?
SOAK noun- An immersion in water etc.
- A drunkard.
- A carouse; a drinking session.
- A low-lying depression that fills with water after rain.
- To be saturated with liquid by being immersed in it.
- To immerse in liquid to the point of saturation or thorough permeation.
- To penetrate or permeate by saturation.
- To allow (especially a liquid) to be absorbed; to take in, receive. (usually + up)
- To take money from.
- To drink intemperately or gluttonously.
- To heat (a metal) before shaping it.
- To hold a kiln at a particular temperature for a given period of time.
- To absorb; to drain.