Important :: Important (v. t.) Full of, or burdened by, import; charged with great interests; restless; anxious..
Important :: Important (v. t.) Carrying or possessing weight or consequence; of valuable content or bearing; significant; weighty.
Important :: Important (v. t.) Bearing on; forcible; driving.
Important :: Important (v. t.) Importunate; pressing; urgent.
Self-important :: Self-important (a.) Having or manifesting an exaggerated idea of one's own importance or merit.