The most common and most likely answer to this crossword clue is the 4 letter word TOAD
I've seen this crossword clue in The Times
T
O
A
D
More clues leading to the result TOAD
- Small piece about old, despicable person
- Amphibian pulled along, we hear
- Fox eats a nasty creature
- Despicable type, little open to love?
- Loathsome guy too hard on regular basis
- Struggling on, I loathed the dish
- Person who is horrible, just a bit, about nothing
- Amphibian a fox swallows
- Amphibian takes oxygen in small amount
- Loathsome type from Fox covering area
Buddy explains!

The straight part
We know that "Despicable type" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case despicable type = toad.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 TOAD mean?
TOAD noun- An amphibian, a kind of frog (order Anura) with shorter hindlegs and a drier, wartier skin, many in family Bufonidae.
- A contemptible or unpleasant person.
- An ugly person.
- To expel (a user) permanently from a MUD or similar system, so that their account is deleted.