The most common and most likely answer to this crossword clue is the 7 letter word PERTAIN
I've seen this crossword clue in The Daily Telegraph
P
E
R
T
A
I
N
More clues leading to the result PERTAIN
- Painter struggling to be relevant
- Concern where painter's daubed
- Apply fresh rations regularly
- Apply fixed rate in personal code
- Be relevant to smart heads of academies in Norfolk
- Apply pressure and confident opener’s dismissed
- Apply flexible rate at home after parking
- Refer fluctuating heart pains — has to be eradicated
- Apply to have fresh Scots Own
- Relate French marshal’s ringing resistance
Buddy explains!

The straight part
We know that "Relate" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case relate = pertain.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 PERTAIN mean?
PERTAIN verb- To belong to or be a part of; be an adjunct, attribute, or accessory of
- To relate, to refer, be relevant to
- To apply; to be or remain in place; to continue to be applicable