incruster

to embed, to inlay; to gatecrash, to stay (for a long time), to overstay

“Cependant Passepartout, juché sur les premières branches d’un arbre, ruminait une idée qui avait d’abord traversé son esprit comme un éclair, et qui finit par s’incruster dans son cerveau.” — Meanwhile Passepartout, who had perched himself on the lower branches of a tree, was resolving an idea which had at first struck him like a flash, and which was now firmly lodged in his brain.

Inherited from Old French incruster, borrowed from Latin incrustāre.