Antonyms for substantial

Antonyms of adj substantial

5 senses of substantial

Sense 1:

significant, substantial

INDIRECT (VIA considerable) -> inconsiderable

Sense 2:

substantial, substantive

INDIRECT (VIA essential) -> inessential, unessential

Sense 3:

substantial (vs. insubstantial), real, material

insubstantial (vs. substantial), unsubstantial, unreal
aeriform, aerial, airy, aery, etherealshadowy, wraithlikestringy

Sense 4:

hearty, satisfying, solid, square, substantial

INDIRECT (VIA wholesome) -> unwholesome

Sense 5:

solid, strong, substantial

INDIRECT (VIA sound) -> unsound