INSUBSTANTIAL
ADJECTIVES
1250 — TOOM empty, insubstantial, void, futile → obs. exc. Sc. & Eng. dial.
1398 — AERY ethereal, spiritual, insubstantial → chiefly poetic and literary usage
1425 — OVERLIGHT too insubstantial or frivolous; too easy
1500 — PICKING insubstantial; trifling → obs.
1579 — RUSHY weak, insubstantial → obs.
1581 — AERIAL ethereal, insubstantial, immaterial
1594 — FILMY insubstantial, superficial
1599 — THINGLESS lacking the character of a thing; insubstantial
1600 — AIRY insubstantial; imaginary; slight, inconsequential
1649 — NIFFLING worthless or insubstantial; trifling → Sc. & Eng. dial.
1747 — FAL-LAL showy and insubstantial; fancy
1754 — FAIRYLAND beautiful and insubstantial
1801 — NOTHINGY of no worth or importance; insubstantial, vapid
1821 — AERIFIED insubstantial, fanciful, affected
1821 — MOONSHINY fanciful, unreal, insubstantial
1827 — AERIFORM insubstantial, unreal
1830 — BUBBLISH insubstantial, deceptive, fraudulent
1846 — GASEOUS light, insubstantial
1857 — AIRY-FAIRY insubstantial; superficial; trivial; of wishful thinking
1858 — WEEDY weak, flimsy; insubstantial
1862 — PASTEBOARDY thin, insubstantial
1879 — CARDBOARD flimsy, insubstantial
..L19 — SKETCHY flimsy, insubstantial, vague → sl.
1909 — LIGHTER-THAN-AIR insubstantial, inconsequential
1930 — FARTING trifling, contemptible, insubstantial → sl.
1938 — ITSY-BITSY small, insubstantial, tiny; also, used disparagingly: arty-crafty, twee → colloq.
1938 — POTEMKIN sham, insubstantial; consisting of little or nothing behind an impressive facade
1940 — ITTY-BITTY small, insubstantial, tiny; also, used disparagingly: arty-crafty, twee
1951 — COTTON-CANDY superficially attractive but without real value; insubstantial or trifling
1957 — CANDYFLOSS superficially attractive but without real value; insubstantial or trifling
1979 — ANOREXIC lacking substance or body; skimpy, meagre, insubstantial
NOUNS
1275 — BREATH something insubstantial or impermanent → literary or poetic usage
1598 — BUBBLE anything fragile, insubstantial, empty, or worthless
1599 — BAG OF WIND something insubstantial, ephemeral, or worthless
1602 — PUFF PASTE matter of a light, flimsy, or insubstantial character → obs.
1606 — PUFF something regarded as insubstantial or inconsequential → obs.
1608 — PAGEANT something empty or insubstantial; a delusion
1664 — GINGERBREAD superficially attractive, yet insubstantial, character, behaviour, or character
1734 — NEBULA something ill-defined or insubstantial
1763 — PUFFBALL something empty, insubstantial, or trivial
1822 — NOMINIS UMBRA an insubstantial thing or person
1830 — BOOBY-HUTCH something considered to be insubstantial or badly made → colloq.
1845 — DREAM-FABRIC an insubstantial or vague idea, concept. etc.
1854 — THIN GRUEL something insubstantial, unsatisfying, or inadequate
1906 — FLUFF something insubstantial or trifling, esp. journalism or other writing
1906 — STARDUST that which is illusory or insubstantial
1935 — MARSHMALLOW something which is insubstantial, superficial, or weak
1951 — CANDYFLOSS something insubstantial or trifling
NOUNS, PERSON
1583 — PUFF a person regarded as insubstantial or inconsequential → obs.
1822 — NOMINIS UMBRA an insubstantial thing or person
Lexicophilia 