The word "be-thinks" is a rare term that means to recollect or remember something suddenly. However, some words that can be used as synonyms for "be-thinks" are "recall," "recollect," "remember," "retrieve," "call to mind," "think back," "bring to mind," "reflect," "remind oneself," and "summon up." Depending on the context, one can use any of these words to express the same idea as "be-thinks." It is essential to choose the right synonym that fits the sentence structure and maintains the intended meaning. In this way, readers can easily understand the message.