The most common and most likely answer to this crossword clue is the 5 letter word TROTH
T
R
O
T
H
More clues leading to the result TROTH
- It was pledged to be red hot
- Faith displayed by husband? Wrong, in hindsight
- Old-fashioned trust to run hotel
- Initially tests resolve over treacherous husband’s fidelity
- Following left-winger it’s hard to show old-fashioned faith
- Jog along with husband in old-fashioned marriage pledge
- Ultimately spout rubbish on origin of high fidelity
- Make gentle progress with hospital pledge
- Pace before husband’s first marital pledge
Buddy explains!

The straight part
We know that "marital pledge" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case marital pledge = troth.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 TROTH mean?
TROTH noun- An oath, pledge, or promise.
- Truth; something true.
- To pledge to marry somebody.