Synonyms of nimious

adjectiveExcessive; extravagant; inordinate; vexatious.

• onerousImposing or constituting a physical, mental, or figurative load which can be borne only with effort; burdensome.
• unrestrainedImmoderate; not restrained or held in check; inordinate (literary).
• arduous
• backbreaking figurativelyOf work, very physically tiring.
• burdenousHeavy; oppressive.
• burdensomeCharacteristic of a burden; arduous or demanding.
• cumbersome
• cumbrous
• demanding
• exacting
• gruellingVery difficult or taxing; exhausting; backbreaking.
• laborious
• operose
• oppressive
• strenuous
• taxing
• wearing
• devilishExcessive, extreme.
• excessiveExceeding the usual bounds of something; too much (of amount); extravagant; immoderate.
• horrendous informalExtremely bad; awful; terrible.
• de trop literaryExcessive or superfluous.
• extravagantExtreme; wild; excessive; unrestrained.
• extremeExcessive, or far beyond the norm.
• immoderateNot moderate; excessive.
• intemperateLacking moderation, temper or control.
• lavishSuperabundant; excessive.
• obsceneBeyond all reason; excessive.
• overmuchExcessive.
• overweeningExaggerated, excessive.
• over the top
• prodigalProfuse, lavishly abundant.
• undueExcessive; going beyond that what is natural or sufficient.
• unmeasured
• unreasonable
• wantonExtravagant, unrestrained, excessive.