unimposing
back-burner
dinky
dispensable
immaterial
inappreciable
inconsequential
inconsiderable
inessential
inferior
insignificant
irrelevant
little
minor
minute
negligible
nonessential
not vital
petit
small
technical
unessential
unnoteworthy
averse
christianised
dissimilar
downcast
lackluster
low-key
maladjusted
mediocre
piggish
put-upon
unattractive
unavailing
unenthusiastic
uneventful
unfitted
unheroic
uninformative
uninspired
uninterested
uninviting
unmilitary
unremarkable
unresponsive
unwell
Progressive
aggressive
depressive
excessive
expressive
impressive
obsessive
oppressive
possessive
progressive
recessive
regressive
repressive
successive