What does "hightail" mean?

To move at full speed, especially in retreat.

What is a synonym for "hightail"?

Common synonyms include: beetle, begone, bolt, bound, canter, clear out.

/ˈhaɪ.teɪl/ verb, slang

verb, slang ·Moderate ·College level

Verb

1
To move at full speed, especially in retreat. Canada, US, informal, transitive, usually
"He hightailed it toward town."
2
retreat at full speed wordnet

"I want you to hightail your butt out of there before they come back."

From high + tail; refers to the behavior of fleeing animals, such as deer, that raise their tail when running away.