When describing someone as being in delicate health, there are a number of synonyms that can be used to convey the same meaning. These include terms like frail, weak, ailing, infirm or sickly. Each of these words suggests that the person is in poor health and may require extra care or attention. Other synonyms might include terms like vulnerable, delicate, or tender, which suggest a need for sensitivity when dealing with the person's health issues. Whatever word is used, it is important to remember that those in delicate health may require more support and understanding than others, and should be treated accordingly.