I woke this morning with this word somewhere in my brain. Looked it up and my brain did the rest.

"she saw youths tampering with her neighbour's car: interfere, monkey around, meddle, tinker, fiddle (about/around), fool about/around, play about/around, toy, trifle, dabble; do mischief to, doctor, alter, change, adjust, damage, do damage toLeading nowhere useful in particular.
harm, deface, vandalise, ruin; informal mess about/around; British informal muck about/around."

Tampering With✍️