The phrase "in fear wife" is archaic and not commonly used in modern language. However, if one were to search for synonyms for this phrase, one could consider expressions such as "afraid spouse," "terrified partner," or "apprehensive mate." These phrases convey a similar feeling of anxiety or unease regarding one's significant other's safety or well-being. Other synonyms may include terms such as "worried companion" or "anxious consort." Regardless of the specific words used, it is important to remember that a healthy relationship should not require fear or apprehension, but instead should foster feelings of security and trust.