The word ‘bad’ is used as an adjective: Depending upon contexts, the word stands for that which lacks moral standards or that which is of poor quality. For example, the sentences, “He is a bad guy”, “The food served in the hotel is bad” where the word bad is used to convey the moral standards or poor quality of things and matters. In other contexts the word bad is used to mean faulty in quality. Statements like, “working of the pump is bad” or “administration of the Association is very bad” indicate that the word ‘bad’ depicts faulty structure of the system.
While referring to a person or a living organism, the word indicates a state of not being in good health. “Her health has become pathetically bad” is example for not being in good health.
No explanations are needed to justify the meaning, clarity, significance and the perfect consonance of the word because usage of bad as an adjective or as an adverb is common both in parlance and in literature.
The origin of the word bad can logically be traced to the word good. When there is something which is good, the perception of there is something which is bad, became a formal necessity. Good and bad are closely linked but distinctly equal in value but opposite in nature.
Use of words as means of communication is the faculty of the human brain. No other species, other than the homo sapiens has its central nervous system attuned to the capabilities and vibrations of the Second Signal System. Second Signal System enables communication through words, either as spoken language or in written formats.
The path of evolution has been the battlefield for survival of the fittest. In the fight, homo-erectus reached the topmost position in the ladder of evolution competing with other species and got shaped up as homo sapiens, called the humans. That specific tool which made humans as the humans owes its credit to the Second Signal System. In the process of the step by step climbing, the fight for existence was essentially for food and shelter and for comfortable subsistence.
Another concern in the war for survival was the question whether the material to be consumed was digestible to be taken or poisonous to be thrown out. The taste buds in the mouth helped the specie to identify the quality of the material and the Second Signal System helped the homo sapiens to alert its co-passengers against or in favor of consuming the material. Thus the verbal communication through the use of words helped and emboldened the humans in the pursuit of the journey. The origin of the idea of good and bad can thus be traced in the search for food and in the process of selection of food, either for consumption or for rejection. In the beginning, however, the inherent meaning could have been communicated by the use of certain unrefined words. The words ‘bad’ and ‘good’ with specific identities, sure enough, ought to have come into common usage as part of lingua-franca only when the language was fully developed.
Good is essential for survival. Bad is hindrance for survival. That being the truth, why bad cannot be eliminated?
The quality of being bad would continue to survive until such time the attributes that make the thing, matter or event for being bad, are removed or eliminated:
A bad man may survive till he dies; a bad man may be turned into a good man by and through refinement. A bad animal may survive till it is killed because refining a bad animal will be more difficult than eliminating it. Killer bacteria and viruses cannot be refined. Similar are the cases with reference to harmful insects. Hence their survival could be disastrous and they need to be eliminated as quickly as possible.
The truth prevails: Bad will continue to tamper everything so long as Good does not embrace everything. But it is wishful thinking for ever to eliminate the bad. Good and bad, they both will continue to compete with each other as uncompromising rivals for ever.