strengthen

But some of the Kurds maintain a disconcerting confidence—one now strengthened by the U.S. airstrikes.

Should redemption take place at par, and at once, the credit of the United States could not fail to be strengthened.

Hence the motives of his conduct to Apaecides, strengthened as these were, in that instance, by his passion for Ione.

The latter hypothesis might be strengthened by other things that point to the Greenlanders having really found land in the west.

His statement only strengthened what we already had reason to believe.

The piquets were strengthened and pushed forward, affording another opportunity for a useful lesson in outpost duty.