When you want to express that something desperately needs something else, you can use the phrase "crying out for". However, there are other synonyms available that can help you convey a similar message in varied tones. You can use phrases such as "screaming for", "yearning for", or "craving for" to indicate that something lacks and requires attention. Other phrases like "longing for", "aching for", or "pining for" portray a more intense desire that goes unfulfilled. You can also use phrases like "demanding", "imperative", or "necessary" to signify the urgency of what is required. So, choose your words wisely to express the depth of the need that something requires.