The phrase "strict order" refers to a specific sequence or hierarchy that must be followed without deviation. There are several synonyms for this phrase that convey a similar sense of structure and adherence to rules. For example, "rigorous arrangement" emphasizes the precision and detail that is required to maintain order in a particular system. Similarly, "methodical progression" suggests a step-by-step approach that must be taken to achieve a particular outcome. Other synonyms for "strict order" include "sequential arrangement," "precise sequence," and "ordered hierarchy," all of which reinforce the importance of following established procedures to ensure consistency and reliability.