What does "lose track" mean?

To forget one's train of thought or temporarily misplace an item or its place in a sequence.

What is a synonym for "lose track"?

Common synonyms include: slipped.

verb

verb ·Rare ·Advanced level

Verb

1
To forget one's train of thought or temporarily misplace an item or its place in a sequence.
"With all that had happened, she had lost track of the time."
2
fail to keep informed or aware wordnet

"With all that had happened, she had lost track of the time."