Antonym: by accident. Similar words: design, designs, designer, designed, design for, designate, designing, designated. Meaning: adv. with intention; in an intentional manner.
(61) By design, the DNA logic gate fluoresced when one of two inputs was present, and accurately stopped fluorescing when both inputs were present.
More similar words: design, designs, designer, designed, design for, designate, designing, designated, designation, resign, resignation, sign, sign on, sign up, sign out, signal, sign in, assign, signify, consign, monsignor, consignor, assigned, foresight, desire, desist, signature, besides, assignment, significant.