<p><strong>Verb</strong></p><ul><li>to stay attached; stick fast; cleave; cling (usually followed by to): The mud adhered to his shoes.</li><li>(of two or more dissimilar substances) to be united by a molecular force acting in the area of contact.</li><li>to be devoted in support or allegiance; be attached as a follower or upholder (usually followed by to): to adhere to a party.</li><li>to hold closely or firmly (usually followed by to): to adhere to a plan.</li><li>to be consistent (obsolete).</li></ul><p><strong>Verb (used with object)</strong></p><ul><li>to cause to adhere; make stick: Glue will adhere the tiles to the wallboard.</li></ul>