Irrevocable (adjective) ناقابل تنسیخ، ناقابل واپسی، اٹل

not able to be changed, reversed, or recovered; final.
Example: “an irrevocable step”
Penetrate (verb) گھسنا، آر پار ہو جانا

go into or through (something), especially with force or effort.
Example: “the shrapnel had penetrated his head”