The most common and most likely answer to this crossword clue is the 7 letter word TITANIC
I've seen this crossword clue in The Sunday Telegraph
T
I
T
A
N
I
C
More clues leading to the result TITANIC
- Big bird, head hidden in fear
- Enormous bird taking a short cut
- Huge current stopping at sea intact
- Wrecked ship? Curiously intact when one’s boarded
- Big pair of birds caught
- Very large birds get caught
- Huge film
- Hugely powerful wrench in attic
- Monster film
- Wasn’t it an iceberg partially responsible for this?
Buddy explains!
The straight part
We know that "very successful picture" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case very successful picture = titanic.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 TITANIC mean?
TITANIC adjective- Having great size, or great strength, force or power.
- Of or relating to titanium, especially tetravalent titanium