Adialectal is a term used to describe something or someone that does not exhibit any specific dialect. Synonyms for adialectal include accent-free, unaccented, undialectical, undialectal and non-regional. These terms differ slightly in terms of their connotation and usage but all convey the same meaning. For instance, accent-free is more neutral and refers to the absence of any accent. On the other hand, undialectical and undialectal suggest a lack of any specific dialect, while non-regional emphasizes the absence of a specific regional dialect. Overall, these synonyms enable us to describe things that are not restricted or defined by any particular dialect or accent.