In one piece' is a common phrase used when referring to something that is intact or undamaged. Its synonyms include 'unscathed,' 'unharmed,' 'undamaged,' 'intact,' 'whole,' 'unbroken,' 'unspoiled,' 'uninjured,' 'unmarred,' and 'untainted.' Each of these words implies the same message as 'in one piece,' but they also add a touch of specificity. For example, while 'unscathed' refers to being without any harm or injury, 'unmarred' only covers damage to the appearance of an object. In conclusion, using these synonyms opens up the possibility for more exact descriptions when referring to something that is undamaged.