There are several synonyms for the word "fussers" that can be used to describe individuals who are overly concerned with details and making sure things are done perfectly. One such synonym is "perfectionist." Other synonyms include "nitpicker," "meticulous," "detail-oriented," "finicky," and "fastidious." Each of these words implies a similar attitude towards tasks and projects, where attention is paid to the smallest details and nothing is overlooked. Though these individuals can sometimes be seen as annoying or difficult to work with, their dedication to quality can often result in exceptional work and outcomes.