UNDRAINABLE Antonyms There are 6 antonyms of the word undrainable. (opposite meanings)Did you mean?Definition of UNDRAINABLESynonyms of UNDRAINABLEBest Opposite Words For UNDRAINABLETop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1absorbentverb, adjectivev, adj2penetrableadjectiveadj3permeableadjectiveadj4porousadjectiveadj5spongyadjectiveadj6drainableadverb, adjectiveadv, adj Alternatives for ABSORBENT Words (7)absorbefacientabsorbingbibulousimbibingporousspongyabsorptivePhrases (1)absorbent materialOpposite words for absorbent Alternatives for PERMEABLE Words (7)absorbentopenpassablepenetrablepermeativeperviousporousOpposite words for permeable Alternatives for POROUS Words (10)permeableabsorbentabsorptivebibulousosmoticpenetrableporousspongyholeyporiferousOpposite words for porous Alternatives for SPONGY Words (14)squishyabsorbentairybouncycompressiblecushyelasticfluffymushyporousresilientspringyspongelikesquashyOpposite words for spongy