Most clipped refers to something that has been trimmed or cut down to a minimum length. Its antonyms would be words that denote length or excess. Words like longest, fullest, tallest, or highest would stand in contrast to most clipped. Most clipped may also express a sense of brevity or terseness, therefore antonyms that suggest elaboration or detail, like expounded or expanded, would also work. Furthermore, antonyms for most clipped could also refer to styles or shapes that are not short or truncated, such as flowing or wild. All of these antonyms serve to highlight the lack of abundance, detail, or length that most clipped implies.