During sleep, most systems in an animal are in an anabolic state, building up the immune, nervous, skeletal, and muscular systems. Sleep in non-human animals is observed in mammals, birds, reptiles, amphibians, and fish, and, in some form, in insects and even in simpler animals such as nematodes. The internal circadian clock promotes sleep daily at night in diurnal species (such as humans) and in the day in nocturnal organisms (such as rodents).
tyrannical - characteristic of an absolute ruler or absolute rule; having absolute sovereignty; an authoritarian regime; autocratic government; despotic rulers; a dictatorial rule that lasted for the duration of the war; a tyrannical government. authoritarian, tyrannic, autocratic, despotic, dictatorial.
Definition of Tyranny. Definition of Tyranny may vary in many dictionaries but the basic gist remains the same. Tyranny is defined based on its rules and regulations. Tyranny Definition also clarifies some ideas about its type of governance and the leadership rules. The framework of a particular government is based on various factors like the resources, the economy, the people of the nation etc.