ostensibly

oletetusti, näennäisesti puhekieltä seemingly, apparently, on the surface
1889, Leslie Stephen, Sidney Lee, Dictionary of national biography

On 13 June the peshwa signed a new treaty, ostensibly complying with the demands of the British government...

Up to a year or two ago it had been the custom to kill horses in the yards — ostensibly for fertilizer...

People strive to achieve perfection — ostensibly an honorable goal — but complete perfection is dangerous. To be imperfect, but human, is far preferable.

Mr. Marwan’s story — a tale overflowing with the suspense and ruthless duplicity of a spy novel — began to take shape in the spring of 1969. He had come to London, ostensibly to consult a Harley Street doctor about a stomach ailment. He chose to be examined by a doctor whose offices had been used previously for a covert meeting between King Hussein of Jordan and the general director of the Israeli prime minister’s office."