[ə]

Height: mid
Advancement: central
Lip rounding: retracted
Tense/Lax: lax

NOTE: schwa occurs in unstressed syllables in all words

astound
rearrange
roasted
ransom
paraded
tangent
salami
ketchup
plantation
spumoni
mountain
tuna
command
relevant
carousel
undone

Allographs

untrue
cologne
machine
villain
parliament
nation
jealous
merrily
porpoise
happen
surgeon