Definition of Dubious: Dubious (adjective): Hesitating or doubting; not to be relied upon; suspect. Synonyms: doubtful, uncertain, questionable, suspicious Antonyms: certain, definite, trustworthy, reliable Memory Tip: Think of “dubious” as being in doubt or questioning the trustworthiness of something. Conversation and Short Story Examples Here is how “dubious” can be used in a casual conversation:…