Antonyms are words that have opposite meanings to a particular word. The word "more unsuspicious" means that one is less suspicious or trusting of something. Therefore, antonyms for the word "more unsuspicious" would include words such as distrustful, suspicious, wary, doubtful, mistrustful, and skeptical. These words all denote a lack of trust or suspicion towards something or someone. It is important to understand the antonyms of a word as it can help to increase your vocabulary and better comprehend the context in which the word is being used.