illiquidPronunciation: /ɪˈlɪkwɪd/Definition of illiquid adjective (of assets) not easily converted into cash:illiquid investments (of a market) with few participants and a low volume of activity. Derivatives illiquidityPronunciation: /-ˈkwɪdɪti/ noun illiquid in other Oxford dictionaries Definition of illiquid in the US English dictionary