On purpose, deliberately, as in Whether by luck or by design, his application was accepted. This term, originally put as on design, uses design in the sense of “plan.” [First half of 1600s]
Words nearby by design
How to use by design in a sentence
An F-35 was destroyed on takeoff earlier in the year when a design flaw in its Pratt & Whitney F135 engine sparked a fire.
But the F-35 has been plagued with massive delays and cost overruns—mostly due to design defects and software issues.
A step-by-step plan to break from your various technology addictions.Can Self-Help Books Really Make a New You?|Lizzie Crocker|December 29, 2014|DAILY BEAST
In general, their presence is meant to throw you off your game by design.Brie Larson’s Hollywood Transformation|Marlow Stern|December 29, 2014|DAILY BEAST
Those snakes attacked unwitting passers-by, or invaded homes and hotels.The Buddhist Business of Poaching Animals for Good Karma|Brendon Hong|December 28, 2014|DAILY BEAST
All along the highways and by-paths of our literature we encounter much that pertains to this "queen of plants."
John was baptizing at a large pool called Ænon-by-Saleim,—probably allegorical, meaning “Fountain of Repose.”Solomon and Solomonic Literature|Moncure Daniel Conway
The sewing-machine made a resounding clatter in the room; it was of a ponderous, by-gone make.The Awakening and Selected Short Stories|Kate Chopin
This was a vast building of classical design, resembling a Grecian temple.The Pit Town Coronet, Volume I (of 3)|Charles James Wills
Mr. Spurrell came down to see a horse, and we shall be very glad to have the benefit of his opinion by-and-by.