Ghostdini: Wizard of Poetry in Emerald City received positive reviews from most music critics. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream critics, the album received an average score of 68, based on 13 reviews, which indicates "generally favorable reviews". Allmusic editor David Jeffries gave it three-and-a-half out of five stars and called the album an "oversexed, always fun, and occasionally hilarious effort", commenting that "Nasty as he wants to be, Ghostdini is nothing more than the Face and friends having a good time. The results are as improper as they are infectious". The Smoking Section wrote that "makes its mark as Ghostface’s most idealistic album furthering its distinction against Ghost’s previously renowned offerings". Delusions of Adequacy's Bryan Sanchez commented that "Forever flourishing, there is so much to love about an album as playfully awesome as this one". Time Out writer Jesse Serwer gave it four out of five stars and complimented Ghostface Killah's "risqué approach" to R&B, calling the album "unique among efforts by rappers to reach into such territory: It’s in no way soft".
However, Larry Fitzmaurice of Tiny Mix Tapes gave it one-and-a-half out of five stars and disliked the album's subject matter, stating "as an album, it’s complete shit, but at least there are a few tracks to listen to when you’re driving". Jon Dolan of Spin gave the album a seven out of 10 rating and wrote favorably of Ghostface Killah's lyrics, stating "Even the raw stuff has the humanizing detail that keeps Ghost interesting years after we've grown accustomed to his imagesplaying Joycean flow". In his consumer guide for MSN Music, critic Robert Christgau gave the album an A- rating. Christgau commended Ghostface's "potentially ridiculous switch to love man" and commented that "rhymewise, this is original work. Eschewing oily sexual details, luxury purchases, and vows of generalized devotion, Ghost mines the same kind of specifics that juice his gangsta repertoire".
Credits for Ghostdini: Wizard of Poetry in Emerald City adapted from Allmusic.