Student Thesaurus

One entry found for insubstantial.
Entry Word: insubstantial
Function: adjective
Text: 1 being of a material lacking in sturdiness or substance <an insubstantial carton that could not possibly stand up during long-dsitance shipping> -- see FLIMSY 1
2 not composed of matter <energy is insubstantial> -- see IMMATERIAL 1