rigorous

As an adjective rigorous

is manifesting, exercising, or favoring rigour; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration.

As a proper noun luck is

.

Obstinate is a related term of rigorous.

As adjectives the difference between obstinate and rigorous

is that obstinate is stubbornly adhering to an opinion, purpose, or course, usually with implied unreasonableness; persistent while rigorous is manifesting, exercising, or favoring rigour; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration.

Stiff is a synonym of rigorous.

As adjectives the difference between stiff and rigorous

is that stiff is of an object, rigid, hard to bend, inflexible while rigorous is manifesting, exercising, or favoring rigour; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration.

As a noun stiff

is an average person, usually male, of no particular distinction, skill, or education, often a working stiff''''' or ''lucky '''stiff .

As a verb stiff

is to fail to pay that which one owes (implicitly or explicitly) to another, especially by departing hastily.

As an adjective rigorous

is manifesting, exercising, or favoring rigour; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration.

As a noun strick is

a flat piece of wood used for levelling off grain in a measure; a strickle.

As an adjective rigorous

is manifesting, exercising, or favoring rigour; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration.

As a proper noun sound is

the strait that separates zealand (an island of denmark) from scania (part of sweden); also sometimes called by the danish name,.

As an adjective rigorous

is manifesting, exercising, or favoring rigour; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration.

As an adverb crossly is

in a cross manner.

As an adjective rigorous

is manifesting, exercising, or favoring rigour; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration.

As a noun hard is

stove, heater; an enclosed space in which fuel (usually wood) is burned to provide heating, usually for cooking.

As adjectives the difference between rigorous and organized

is that rigorous is manifesting, exercising, or favoring rigour; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration while organized is of a person, characterised by efficient organisation.

As a verb organized is

(organize).

As adjectives the difference between rigorous and extensive

is that rigorous is manifesting, exercising, or favoring rigour; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration while extensive is in the nature of an extent, wide, widespread.

Sour is a related term of rigorous.

As adjectives the difference between sour and rigorous

is that sour is having an acidic, sharp or tangy taste while rigorous is manifesting, exercising, or favoring rigour; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration.

As a noun sour

is the sensation of a sour taste.

As a verb sour

is (label) to make sour.