The most common and most likely answer to this crossword clue is the 8 letter word TOURISTS
I've seen this crossword clue in The Daily Telegraph
T
O
U
R
I
S
T
S
More clues leading to the result TOURISTS
- Visitors to university ruin site so every other character leaves
- Travellers take children around old city islands
- Those visiting solicitors holding teacher up
- Half of town’s lawyers heading off travellers
- Queen is surrounded by ticket sellers and trippers
- Travellers or ticket sellers accepting endless risk
- Couple of joints picked up for trippers
- Travellers by trains often accommodated by brokers?
- Travellers to America getting stir-crazy
- Visitors of university teacher turned up in shorts
Buddy explains!

The straight part
We know that "trippers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case trippers = tourists.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 TOURISTS mean?
TOURISTS noun- Someone who travels for pleasure rather than for business.
- One who visits a place or attends a social event out of curiosity, wanting to watch without commitment or involvement.
- A member of the visiting team in a match.