A house sitter is a person who looks after a house while the owners are away. The two crossword solutions for this term are HEN, which is a three letter word, and SPEAKER, which is a seven letter word. HEN is a term used to refer to a female chicken or bird, while SPEAKER is someone who talks in a public setting. Both of these words can be used to describe a house sitter, as they are responsible for taking care of the house and its inhabitants while the owners are away.