Modifiers matching difficulty:

• emotional,
• persistent,
• home,
• hormonal,
• psychological,
• legal,
• personal,
• serious,
• commercial,
• sensory,
• physical,
• unusual,
• prevalent,
• single,
• habitual,
• significant,
• academic,
• mathematical,
• perceptual,
• unanticipated,
• behavioural,
• past,
• unforeseen,
• respiratory,
• concurrent,
• invisible,
• psychiatric,
• experimental,
• important,
• motor,
• experienced,
• extra,
• financial,
• sexual,
• extreme,
• related,
• economic,
• traditional,
• extraneous,
• visual,
• operational,
• temporary,
• acute,
• mental,
• logistical,
• structural,
• surgical,
• clinical,
• subjective,
• linguistic,
• real,
• functional,
• environmental,
• internal,
• cognitive,
• special,
• stable,
• ongoing,
• reproductive,
• domestic,
• progressive,
• typical,
• common,
• natural,
• mechanical,
• periodic,
• leaning,
• social,
• administrative,
• parental,
• minor,
• spiritual,
• maternal,
• possible,
• major,
• secondary,
• everyday,
• chronic,
• somatic,
• conceptual,
• educational,
• nutritional,
• local,
• anatomical,
• smaller,
• developmental,
• neuropsychiatric,
• behavioral,
• technological,
• underlying,
• computational,
• basic,
• practical,
• stressful,
• neurological,
• technical,
• unexpected,
• severe,
• particular,
• regulation,
• external,
• interpersonal,

Simple categories matching technological:

• accident,
• equipment,
• school,
• system,
• failure,
• fix,
• instrument,
• shift,
• object,
• difficulty,
• medium,
• sector,
• means,
• discipline,
• necessity,
• research,
• investment,
• complexity,
• skill,
• thing,
• item,
• disaster,
• option,
• information,
• study,
• artifact,
• wonder,
• subject,
• characteristic,
• process,
• industry,
• requirement,
• content,
• incident,
• improvement,
• occupation,
• fiber,
• character,
• user,
• metal,
• flora,
• installation,
• intervention,
• organizer,
• processing,
• area,
• tool,
• facility,
• field,
• output,
• phenomenon,
• crime,
• contraption,
• challenge,
• outcome,
• material,
• innovation,
• activity,
• control,
• connection,
• task,
• device,
• hazard,
• assets,
• hardware,
• development,
• feature,
• danger,
• event,
• arts,
• arena,
• weapon,
• happening,
• project,
• abstraction,
• waste,
• representation,
• interaction,
• progress,
• renovation,
• possibility,
• concept,
• success,
• enterprise,
• effort,
• machine,
• education,
• creation,
• institution,
• preparation,
• condition,
• organization,
• interest,
• art,
• solution,
• practice,
• product,
• protection,
• property,
• distinction,
• domain,
• gadget,
• measure,
• application,
• nature,
• initiative,
• knowledge,
• consideration,
• operations,
• advancement,
• document,
• limitation,
• toy,
• endeavor,
• structure,
• service,
• attribute,
• market,
• network,
• science,
• integration,
• use,
• construction,
• issue,
• assistance,
• revolution,
• safeguard,
• production,
• matter,
• artefact,
• way,
• surgery,
• apparatus,
• centre,
• evolution,
• invention,
• achievement,
• aspect,
• devices,
• care,
• business,
• change,
• advance,
• opportunity,
• support,
• values,
• entity,
• unit,
• input,
• resource,
• course,