<p><strong>Verb (used without object):</strong></p><ul><li>To think or speculate curiously: to wonder about the origin of the solar system.</li><li>To be filled with admiration, amazement, or awe; marvel (often followed by at): He wondered at her composure in such a crisis.</li><li>To doubt: I wonder if she'll really get here.</li></ul><p><strong>Noun:</strong></p><ul><li>Something strange and surprising; a cause of surprise, astonishment, or admiration: That building is a wonder. It is a wonder he declined such an offer.</li><li>The emotion excited by what is strange and surprising; a feeling of surprised or puzzled interest, sometimes tinged with admiration: He felt wonder at seeing the Grand Canyon.</li><li>Miraculous deed or event; remarkable phenomenon.</li></ul>