The phrase "short memory" refers to the tendency of a person to forget things easily and quickly. Synonyms for this phrase include forgetful, absent-minded, unable to recall, hazy memory, loss of memory, and poor memory retention. Other related words or phrases that can be used instead of "short memory" include amnesia, forgetfulness, memory lapse, memory lapse syndrome, and memory problems. It is important to note that memory issues can also be a symptom of certain medical conditions, such as Alzheimer's disease or dementia, and it is best to consult a healthcare professional if frequent memory lapses occur.