Antonyms of adj outrageous

2 senses of outrageous

Sense 1
hideous, horrid, horrific, outrageous -- (grossly offensive to decency or morality; causing horror; "subjected to outrageous cruelty"; "a hideous pattern of injustice"; "horrific conditions in the mining industry")

INDIRECT (VIA offensive) -> inoffensive -- (giving no offense; "a quiet inoffensive man"; "a refreshing inoffensive stimulant")

Sense 2
exorbitant, extortionate, outrageous, steep, unconscionable, usurious -- (greatly exceeding bounds of reason or moderation; "exorbitant rent"; "extortionate prices"; "spends an outrageous amount on entertainment"; "usurious interest rate"; "unconscionable spending")

INDIRECT (VIA immoderate) -> moderate -- (being within reasonable or average limits; not excessive or extreme; "moderate prices"; "a moderate income"; "a moderate fine"; "moderate demands"; "a moderate estimate"; "a moderate eater"; "moderate success"; "a kitchen of moderate size"; "the X-ray showed moderate enlargement of the heart")

Similarity of adj outrageous

2 senses of outrageous

Sense 1
hideous, horrid, horrific, outrageous -- (grossly offensive to decency or morality; causing horror; "subjected to outrageous cruelty"; "a hideous pattern of injustice"; "horrific conditions in the mining industry")
       => offensive (vs. inoffensive) -- (unpleasant or disgusting especially to the senses; "offensive odors")

Sense 2
exorbitant, extortionate, outrageous, steep, unconscionable, usurious -- (greatly exceeding bounds of reason or moderation; "exorbitant rent"; "extortionate prices"; "spends an outrageous amount on entertainment"; "usurious interest rate"; "unconscionable spending")
       => immoderate (vs. moderate) -- (beyond reasonable limits; "immoderate laughter"; "immoderate spending")