Synonyms of 'immunize'
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To protect someone or something means to prevent them from being harmed or damaged.
He vowed to protect her all the days of her life.
To safeguard something or someone means to protect them from being harmed, lost, or badly treated.
international action to safeguard the ozone layer
Thesaurus for immunize from the Collins English Thesaurus
If people or animals are immunized , they are made immune to a particular disease , often by being given an injection .