PLEDGE

[verb] [T]We are asking people to pledge their support for (= promise that they will support) our campaign.If you join the armed forces, you have to pledge allegiance to your country.So far, £50 000 has been pledged (= people have promised to pay this amount) in response to the appeal.The government has pledged that it will spend more money on education. [+ that clause]Both sides have pledged to end the fighting. [+ to infinitive]I've been pledged to secrecy.We've pledged ourselves to fight for justice. [+ object + to infinitive]