<p><strong>Verb</strong></p><ul><li>to annoy; give trouble to; pester.</li><li>to cause unease, anxiety, or worry in (someone).</li><li>to bewilder; confuse.</li><li>to take the trouble; trouble or inconvenience oneself.</li></ul><p><strong>Noun</strong></p><ul><li>something troublesome, burdensome, or annoying.</li><li>effort, work, or worry.</li><li>a worried or perplexed state.</li><li>someone or something that bothers or annoys.</li></ul><p><strong>Interjection</strong></p><ul><li>(used to express mild irritation.)</li></ul>