"Toploftical" is a rarely used word that means arrogant or pompous. Some synonyms that can be used in place of "toploftical" include haughty, conceited, egotistical, snobbish, overbearing, superior, stuck-up, pretentious, and self-important.
All of these words have similar connotations to "toploftical," and can be used to describe someone who is excessively proud or thinks they are superior to others. It's important to choose synonyms that fit the context of the sentence and accurately convey the intended meaning.
Overall, while "toploftical" may not be a common word used in everyday conversation, knowing its synonyms can help expand one's vocabulary and ability to accurately describe people or situations.