The phrase "kitchen sink" is often used to describe an all-inclusive, thorough approach to something. However, there are several synonyms that can convey a similar meaning. One such term is "everything but the kitchen sink," which emphasizes the inclusion of everything possible. Another option is "full-court press," which originated in basketball but can be used to describe an all-out effort in any situation. "Whole enchilada" is another synonym that implies an all-encompassing approach. "Overkill" can also convey the idea of doing too much or including too many things. Finally, "barrage" can be used to describe a sudden and overwhelming surge of information or effort.