A poor speller is someone who struggles with spelling words correctly. There are several synonyms for the term "poor speller", such as "bad speller", "incompetent speller", "weak speller", "inept speller", "illiterate speller", "unskilled speller", "uneducated speller", "deficient speller", "substandard speller", "amateur speller", "awkward speller", and "clumsy speller". While these terms may seem harsh, it's important to remember that individuals who struggle with spelling may face challenges in academic and professional settings. It's essential to be patient and understanding with those who struggle with spelling and offer support and resources to help them improve.