hard - adjective

• not easy; requiring great physical or mental effort to accomplish or comprehend or endure
• dispassionate
• resisting weight or pressure
• produced without vibration of the vocal cords
• (of light) transmitted directly from a pointed light source
• (of speech sounds); produced with the back of the tongue raised toward or touching the velum
• very strong or vigorous
• characterized by effort to the point of exhaustion; especially physical effort
• given to excessive indulgence of bodily appetites especially for intoxicating liquors
• being distilled rather than fermented; having a high alcoholic content
• unfortunate or hard to bear
• dried out

hard - adverb

• with effort or force or vigor
• with firmness
• earnestly or intently
• causing great damage or hardship
• slowly and with difficulty
• indulging excessively
• into a solid condition
• very near or close in space or time
• with pain or distress or bitterness
• to the full extent possible; all the way

hard - thesaurus

arduous   backbreaking   concentrated   difficult   firmly   grueling   gruelling   heavily   heavy   intemperate   intemperately   knockout   laborious   operose   punishing   severe   severely   strong   surd   toilsome   tough   unvoiced   voiceless