pledge
allegiance
One after another, uniformed officers appeared before the crowds, pledging their allegiance to the sovereign.
They had to protect the farm from marauding bandits that pledged allegiance to neither side.
New citizens had to attend a ceremony where they pledge allegiance by raising their hand and renouncing their citizenship to any other country.
SMART Vocabulary: related words and phrases
Making & breaking promises & commitments
be on your honouridiom
bond
breach of contract
commit someone to something
commitment
committed
covenant
cross my heart (and hope to die)idiom
deliver on something
fink
oath
pact
pledge
promisor
promissory
repledge
restrictive covenant
swear someone in
sworn
vow