There are several synonyms for "giving in to" that convey the same idea of surrendering or yielding to pressure or persuasion. One such synonym is "caving in," which suggests a sense of defeat or resignation. Another option is "surrendering," which implies a relinquishing of control or power. "Submitting" is another synonym that suggests a yielding to authority or dominance. "Acquiescing" is a similar term that conveys a passive acceptance of a situation or idea. Other synonyms include "conceding," "compromising," "capitulating," and "yielding." Overall, these synonyms indicate a willingness to give up one's position or desires in favor of another.