The word "atsea" is an adverb that means being in a state of confusion, doubt, or uncertainty. Synonyms for "atsea" include bewildered, disoriented, perplexed, puzzled, dazed, unsure, and lost. These words express a feeling of being mentally disorientated or lacking direction. Other synonyms for "atsea" may include confused, flustered, muddled, or discombobulated. The use of these synonyms can help to provide additional descriptive language to convey a sense of being lost or unsure of what to do. Overall, "atsea" is a versatile word that carries a strong sense of uncertainty that can be conveyed through different words.