Definition of Hard

Adjective: hard (harder,hardest) haa(r)d

Not easy; requiring great physical or mental effort to accomplish or comprehend or endure
"why is it so hard for you to keep a secret?";
- difficult
Dispassionate
"took a hard look"; "a hard bargainer"
Resisting weight or pressure
Very strong or vigorous
"a hard left to the chin";
- knockout, severe
Characterized by effort to the point of exhaustion; especially physical effort
"hard labour";
- arduous, backbreaking, grueling [US], gruelling [Brit, Cdn], heavy, laborious, operose, punishing, toilsome
Produced without vibration of the vocal cords
"hard consonants such as 'p' and 'k' and 's'";
- unvoiced, voiceless, surd
(of light) transmitted directly from a pointed light source
- concentrated
(of speech sounds); produced with the back of the tongue raised toward or touching the velum
"Russian distinguished between hard consonants and palatalized or soft consonants"
Given to excessive indulgence of bodily appetites especially for intoxicating liquors
"a hard drinker";
- intemperate, heavy
Being distilled rather than fermented; having a high alcoholic content
"hard liquor";
- strong
Unfortunate or hard to bear
"had hard luck";
- tough
Dried out
"hard dry rolls left over from the day before"

Adverb: hard haa(r)d

With effort, force or vigour
"the team played hard"; "worked hard all day"; "pressed hard on the lever"; "hit the ball hard"; "slammed the door hard"
With firmness
"held hard to the railing";
- firmly
Earnestly or intently
"thought hard about it"; "stared hard at the accused"
Causing great damage or hardship
"industries hit hard by the depression";
- severely
Slowly and with difficulty
"prejudices die hard"
Indulging excessively
"he drank hard";
- heavily, intemperately
Into a solid condition
"concrete that sets hard within a few hours"
Very near or close in space or time
"it stands hard by the railway tracks"; "they were hard on his heels"; "a strike followed hard upon the plant's opening"
With pain, distress or bitterness
"he took the rejection very hard"
To the full extent possible; all the way
"hard alee"; "the ship went hard astern"; "swung the wheel hard left"