miscible / missable are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
miscible: (adjective) (chemistry, physics) capable of being mixed.
missable: NA
miscible: m·IH·s·ah·b·ah·l
missable: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)