The phrase "bolster him" is correct and usable in written English.
You can use it when referring to providing support or encouragement to someone.
Example: "To help him succeed in his new role, I decided to bolster him with additional resources and guidance."
Alternatives: "support him" or "strengthen him."
Mr. Karzai brought innate advantages that continue to bolster him.
Yet Powell implies that other memories will bolster him before Saturday's defining final.
Hatton, clearly, will need Shannon to both calm and bolster him tonight.
On the other hand, Schwitters doesn't need starry associations to bolster him.
She campaigned for her husband in 1988, when he won the Presidency, and her popularity seemed to bolster him.
They emerge to bolster him, to alleviate the burdens that can be alleviated, to share what can be shared.
When Mr. Obama wanted to overhaul health care and immigration laws, she backed and bolstered him against the advice of aides who urged a more cautious approach.
While he is not above being competitive with her, he sees her role in the peace effort as potentially bolstering him rather than undercutting him, those people say.
The top issue on the minds of caucusgoers on Saturday was the economy, and 6 in 10 of those who listed it as their leading concern voted for Mr. Romney, potentially bolstering him in his argument that his experience as a businessman makes him the best candidate to improve the employment rate quickly.
How dare you try to steal my subtitle?' ") And there was more to show, as well, including a passage from one of Tennessee Williams's letters offering tribute to his loyal friends Eli and Annie, who had bolstered him against the occasional unkindness of critics (including those from The New York Times).
The State of the Union might have cosseted his pride, with the Republicans in the audience bolstering him, and Melania smiling in the gallery, and the clapping, which he led, at times for his guests, who had shown real bravery in the face of fires or hurricanes or ISIS, or the loss of or the adoption of a child but often enough for himself.
