Done up is a common phrasal verb used to describe the completion or finishing of something. However, there are many synonyms that can be used in its place, depending on the context and the desired tone. For example, 'completed', 'finished', 'concluded' and 'settled' can be used instead of 'done up' to indicate that something has been completed effectively and thoroughly. 'Decked out', 'dressed up', 'spruced up' and 'gussied up' are synonyms for 'done up' specifically in terms of one's appearance or clothing. 'Prepared', 'arranged', 'organized', 'planned', and 'managed' are synonyms for 'done up' when referring to a task or project that has been completed with care and attention to detail.