It was only at an entertainment ostensibly offered to a "foreign visitor" that Mrs. van der Luyden could suffer the diminution of being placed on her host’s left.
The ostensible reason of his appearance was the discovery, the very night before, of a "perfect little house," not in the market, which was really just the thing for her, but would be snapped up instantly if she didn’t take it; and he was loud in mock-reproaches for the dance she had led him in running away just as he had found it.
There are no more uses of "ostensibly" in the book.
Show samples from other sources
His ostensible purpose was charity, his real goal popularity.
Whitney had stayed home, ostensibly to get dinner ready.