"reject it for" is a grammatically correct phrase and can be used in written English.
It means to refuse or dismiss something for a particular reason or purpose. Example: The company decided to reject the proposal for the new project due to budget constraints.
Mitt Romney, a Republican presidential candidate, recently charged that Mr. Obama "simply brushed aside" the plan by the so-called Bowles-Simpson commission (named after its two chairmen) — even though he and most Republicans reject it for its proposed tax increases.
On the BBC World News, Ann Widdecombe and the Archbishop of Abuja in Nigeria were severely, and rationally, trounced by Christopher Hitchens and Stephen Fry, in the Intelligence Squared debate: "Is the Catholic church a force for good in the world?" The post-debate vote showed how rational people will, when given the facts, reject it for its past and ongoing crimes against humanity.
They reject it for two reasons.
But to reject it for your child is like denying her nourishment".
But to reject it for your child — it's like denying her nourishment".
In Study 1, children observed the model accidentally select a physically optimal tool for a task and then intentionally reject it for one that was functionally nonaffordant.
But he rejected it for his new science-fiction movie, "Monsters".
He rejected it for a second time, gesturing frantically towards the Brandenburg Gate.
"We were offered his briefcase by one collector, but we rejected it for that reason".
But I rejected it for this reason: Why should we give the terrorists precisely what they want?
"The Chinese government and people simply will not believe we rejected it for economic reasons," he said.
