The word "ransacker" is often used to describe someone who searches through a place or property in a careless and destructive manner. If you need to replace this word in your writing, there are several synonyms that can be used instead. Some of these synonyms include pillager, plunderer, marauder, raider, looter, thief, burglar, and intruder. These words can be used interchangeably to describe someone who intrudes and steals after disrupting or damaging a property. Other synonyms that can be used for the word "ransacker" include despoiler, vandal, or wrecking. These words describe people who carry out destructive actions while they steal from a property.