- liquid (adj.)
- late 14c., from Old French liquide "liquid, running," from Latin liquidus "fluid, liquid, moist," figuratively "flowing, continuing," from liquere "be fluid," related to liqui "to melt, flow," from PIE *wleik- "to flow, run." Of sounds, from 1630s (the Latin word also was used of sounds). Financial sense of "capable of being converted to cash" is first recorded 1818.
- liquid (n.)
- "a liquid substance," 1709, from liquid (adj.). Earlier it meant "sound of a liquid consonant" (1520s).