With　the　rapid　development　of　e-commerce,　online　reviews　have　become　an　important　information　source　for　consumers　and　e-commerce　businesses.　While　the　negative　impact　of　deceptive　online　reviews　has　been　well　recognized,　more　research　has　to　be　done　to　help　understand　the　linguistic　manifestations　of　deceptive　online　reviews　in　order　to　help　identify　deceptive　reviews　and　help　increase　the　value　and　sustainability　of　e-commerce　businesses.　This　study　explores　the　linguistic　manifestations　of　deceptive　online　reviews　based　on　the　reality　monitoring　theory,　and　then　uses　the　data　from　Amazon.com　online　product　reviews　to　examine　perceptual　cues,　affective　cues,　detail　cues,　relevance　cues,　and　cognitive　cues　of　various　deceptive　online　reviews.　The　results　show　that　reviews　for　emotional　catharsis　are　more　extreme　with　affective　cues,　while　perfunctory　reviews　often　lack　details　with　fewer　prepositions　and　adjectives.　In　addition,　deceptive　reviews　often　lack　relevance　cues　when　these　reviews　are　made　to　obtain　the　rewards　provided　by　the　vendors　while　paid　posters　tend　to　use　more　cognitive　cues　in　deceptive　reviews.　Moreover,　deceptive　online　reviews　under　all　motives　often　lack　perceptual　cues.　These　findings　provide　a　deeper　understanding　of　the　linguistic　manifestations　of　deceptive　online　reviews　and　provide　significant　managerial　implications　for　e-commerce　businesses　to　employ　high-quality　online　reviews　for　sustainable　growth.