EN

Synonyms for insubstantial

Most common

unreal ethereal airy tenuous hollow flimsy

All synonyms

Adjective

Definitions

  1. adj. 1

    Lacking substance; not real or strong.

    The bridge was insubstantial and would not safely carry a car.

Related words

Is a kind of
lacking

Example sentences

  • unreal I find the concept of Globish restrictive and unreal.
  • ethereal The voice sounded very weird, almost ethereal.
  • airy The airy castle looked like a feudal fortress.
  • tenuous Netanyahu's grip on power is tenuous.
  • hollow Near Sleepy Hollow is a village called Tarry Town.
  • flimsy The flimsy cordon failed to keep back the protestors.

Popularity over time

Word1850 → 2019Trend
insubstantialsteady
unrealsteady
etherealrising
airyrising
tenuoussteady
hollowsteady

Use in printed books, per decade from 1850 to 2019.

By length

4 letters
weak1, airy2, aery
5 letters
light1
6 letters
hollow2, unreal2, flimsy2
7 letters
shadowy3, tenuous3
8 letters
ethereal4, gossamer3, vaporous
10 letters
immaterial5, diaphanous4
13 letters
unsubstantial

The small number after each word is its number of syllables (airy2 = 2 syllables).