The most common and most likely answer to this crossword clue is the 4 letter word PAST
I've seen this crossword clue in The Daily Telegraph
P
A
S
T
More clues leading to the result PAST
- Rather glib about Society in historical times
- Reportedly did well in exam for history
- Done in since halving physical training?
- 13 over 12?
- Clapped-out old man’s one tweeting?
- Grazing land river destroyed, making one tense
- Forgotten old man on street
- Nearly all of dough’s gone
- The old man, a holy person in history
- To the listener, moved over
Buddy explains!

The straight part
We know that "Over/tense" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case over/tense = past.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 PAST mean?
PAST verb- To change place.
- To change in state or status
- To move through time.
- To be accepted.
- In any game, to decline to play in one's turn.
- To do or be better.
- To take heed.
- The period of time that has already happened, in contrast to the present and the future.
- (grammar) The past tense.
- Having already happened; in the past; finished.
- (postmodifier) Following expressions of time to indicate how long ago something happened; ago.
- Of a period of time: having just gone by; previous.
- (grammar) Of a tense, expressing action that has already happened or a previously-existing state.
- In a direction that passes.
- Passing by, especially without stopping or being delayed.
- Beyond in place, quantity or time.
- No longer capable of.
- Having recovered or moved on from (a traumatic experience, etc.).