The phrase "accept implicitly" refers to the act of trusting or believing something without doubt or question. There are several synonyms for this expression, including "assume," "take for granted," "presume," "believe blindly," and "accept as true." These words all convey the same idea of accepting information or thoughts without scrutiny. Other similar phrases include "to swallow whole," "to buy into," "to have faith in," and "to trust completely." It's crucial to note that blindly accepting or trusting without evidence or reason can be dangerous, so it's always essential to be critical and examine information before believing it implicitly.