Reason to or for

Hello!

Both “a reason for quitting” and “a reason to quit” are correct in English.

Reason for + noun/gerund

Use this when the thing after reason is a noun or -ing form.

a reason for quitting

a reason for the delay

a reason for celebration

a reason for his behavior

Reason to + base verb

Use this when the phrase describes an action someone may take.

a reason to quit

a reason to worry

a reason to believe

a reason to discuss

a reason to trust him

Both of these phrases are commonly used, but have slightly different meanings. For example:

"A reason to quit" (in the past, present or future tense) is most commonly used when you haven't quit anything yet, but are considering it - "I did have a reason to quit", "I do have a reason to quit" and "I will have a reason to quit" all imply that you have not quit yet, but have a reason to.

"A reason for quitting" is most commonly used when you have already quit, in the past, present and future tense: "I did have a reason for quitting", "I do have a reason for quitting" and "I will need a reason for quitting" all place more emphasis on whether you have a reason or not, rather than on the actual act of quitting (which is certain).

You can see this in these examples:

"Her *reason to spend* time with Grandma is......" vs. "Her *reason for spending* time with Grandma is....."

"I want a reason to see him." vs. "I want a reason for seeing him" - in the first phrase, it means you have not seen him yet but you want a reason to, and in the second phrase you have already seen him and you want a reason for it.

"seeing", "spending" and "quitting" are all examples of verbs ("to see", "to spend" and "to quit") acting as nouns.