This is the 5104th most frequent French word.
échapper
To escape or to avoid.
Here, the word 'échapper' refers to physically avoiding or leaving a situation or place.
Je n'ai pas pu échapper à la foule.
I couldn't escape from the crowd.
In this sentence, 'échapper' is used metaphorically to mean that the speaker couldn't recall or find the adequate word.
Le mot juste m'a échappé.
The right word escaped me.
Here, 'échapper' signifies a lack of focus, where thoughts diverge or elude control.