Modifiers matching cause:

• natural,
• harmful,
• external,
• inner,
• economic,
• rightist,
• anthropogenic,
• underlying,
• intracranial,
• physical,
• physiologic,
• systemic,
• dramatic,
• strong,
• mundane,
• level,
• alternative,
• unusual,
• secular,
• identifiable,
• organic,
• favorite,
• dental,
• worthy,
• environmental,
• political,
• common,
• unavoidable,
• viral,
• possible,
• discrete,
• occupational,
• undesirable,
• mystical,
• emotional,
• spinal,
• corrosive,
• agricultural,
• nonspecific,
• obstetric,
• historical,
• personal,
• psychiatric,
• benevolent,
• familiar,
• ordinary,
• seasonal,
• lethal,
• molecular,
• etiologic,
• dangerous,
• festive,
• local,
• secondary,
• healthy,
• humanitarian,
• assignable,
• moral,
• holy,
• psychological,
• unethical,
• behavioural,
• invisible,
• communal,
• clinical,
• infrequent,
• fundamental,
• unpopular,
• functional,
• exogenous,
• deliberate,
• permanent,
• concomitant,
• rural,
• constructive,
• electronic,
• exotic,
• inflammatory,
• unforeseeable,
• sensitive,
• usual,
• benign,
• subjective,
• correctable,
• popular,
• extraordinary,
• indirect,
• accidental,
• direct,
• larger,
• allergic,
• single,
• social,
• out,
• domestic,
• supporting,
• random,
• pathological,
• islamic,
• meteorological,
• individual,
• traumatic,
• everyday,
• threatening,
• rare,
• technical,
• intelligent,
• good,
• infectious,
• religious,
• chemical,
• internal,
• noble,
• up,
• typical,
• significant,
• temporary,
• biological,
• persistent,
• uncontrollable,
• diverse,
• abstract,
• intentional,
• involuntary,
• public,
• oral,
• unnatural,
• broad,
• objective,
• structural,
• outside,
• maternal,
• miscellaneous,
• tangible,
• hormonal,
• psychosomatic,
• negative,
• traditional,
• smaller,
• positive,
• separate,
• gynecological,
• postnatal,
• democratic,
• immoral,
• mechanical,
• weather,
• medical,
• violent,
• inanimate,
• chronic,
• stable,
• acute,
• extraneous,
• proximal,
• illegal,
• physiological,
• pelvic,
• toxic,
• controllable,
• prenatal,
• multifactorial,
• mental,
• legal,
• genetic,
• multiple,
• exterior,
• special,
• irritating,
• shared,
• auxiliary,
• metabolic,
• original,
• nonphysical,
• malicious,
• endogenous,
• transient,
• particular,
• nonsurgical,
• unpredictable,
• complex,
• inevitable,
• charitable,
• cardiovascular,
• important,
• catastrophic,
• potential,
• musculoskeletal,
• reversible,
• conservative,
• vague,
• anatomic,
• evil,
• microbial,
• sudden,
• relevant,
• innocent,
• hidden,
• grassroots,
• symptomatic,
• congenital,
• ocular,
• major,
• simple,
• animal,
• higher,
• irreversible,
• neutral,
• pathologic,
• universal,
• hemodynamic,
• visible,
• valuable,
• infective,
• primary,
• parasitic,
• indian,
• neurologic,
• cardiac,
• related,
• scientific,
• distinct,
• desirable,
• immediate,
• malignant,
• noninfectious,
• bacterial,
• specified,
• real,
• extraterrestrial,
• abnormal,
• philanthropic,
• cultural,
• financial,
• exciting,
• gastrointestinal,
• acquired,
• basic,
• vascular,
• evolutionary,
• general,
• unexpected,
• serious,
• anatomical,
• inborn,
• induced,
• postoperative,
• normal,
• supernatural,
• central,
• electrical,
• essential,
• formal,
• neurological,
• nasty,
• geographic,
• artificial,
• reasonable,
• dynamical,
• preventable,
• clear,
• large,
• logical,
• practical,

Simple categories matching irritating:

• bug,
• substance,
• thing,
• gas,
• chemical,
• food,
• pest,
• molecule,
• beverage,
• creature,
• contaminant,
• item,
• compound,
• material,
• insect,
• fabric,
• poison,
• inhalant,
• agent,
• shampoo,
• odor,
• drug,
• fiber,
• odour,
• antiseptic,
• ingredient,
• fumes,
• particle,
• medicine,
• pollutant,
• condition,
• smell,
• contamination,
• cause,