for life
prep. phr..prep. phr.. lasting for the rest of your time on earth; something that you have or do until you die.
prep. phr.. functioning as an adjectival or adverbial phrase indicating a duration that encompasses the remainder of a person's lifespan.
They became best friends for life.
When you adopt a pet, you are making a commitment to care for it for life.
The judge sentenced the defendant to prison for life, ensuring he would never return to the streets.
often follows a noun like 'friend' or 'partner', or a verb like 'sentence' or 'commit'.
contrast with 'lifelong' (adjective) to show how 'for life' usually functions as a post-modifier or adverbial; it is also a common legal term in sentencing.
They are friends for the life.They are friends for life.the phrase is a fixed idiom and does not use a definite article before 'life'.