<p><strong>Adjective:</strong></p><ul><li>causing or apt to cause fear; frightening: a fearful apparition.</li><li>feeling fear, dread, apprehension, or solicitude: fearful for his life.</li><li>full of awe or reverence: fearful of the Lord.</li><li>showing or caused by fear: fearful behavior exhibited by dogs in the animal shelter.</li><li>extreme in size, intensity, or badness: fearful poverty.</li><li>a fearful head cold; fearful poverty.</li></ul><p><strong>Synonyms:</strong></p><ul><li>worried</li><li>concerned</li><li>anxious</li><li>solicitous</li><li>distrustful</li><li>uneasy</li><li>apprehensive</li><li>timorous</li><li>timid</li><li>afraid</li></ul>