Quick definitions from WordNet (hard)
▸ adjective: very strong or vigorous ("A hard left to the chin")
▸ adjective: dried out ("Hard dry rolls left over from the day before")
▸ adjective: unfortunate or hard to bear ("Had hard luck")
▸ adjective: not yielding to pressure or easily penetrated ("Hard as rock")
▸ adjective: metaphorically hard ("A hard fate")
▸ adjective: of speech sounds
▸ adjective: having a high alcoholic content ("Hard liquor")
▸ adjective: having undergone fermentation ("Hard cider")
▸ adjective: 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?")
▸ adjective: characterized by toilsome effort to the point of exhaustion; especially physical effort ("Hard labor")
▸ adverb: with effort or force or vigor ("The team played hard")
▸ adverb: to the full extent possible; all the way ("Hard alee")
▸ adverb: slowly and with difficulty ("Prejudices die hard")
▸ adverb: causing great damage or hardship ("Industries hit hard by the depression")
▸ adverb: with firmness ("Held hard to the railing")
▸ adverb: earnestly or intently ("Thought hard about it")
▸ adverb: with pain or distress or bitterness ("He took the rejection very hard")
▸ adverb: very near or close in space or time ("It stands hard by the railroad tracks")
▸ adverb: into a solid condition ("Concrete that sets hard within a few hours")
▸ adverb: indulging excessively
▸ name: A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #12415)
▸ Also see hard
▸ adjective: very strong or vigorous ("A hard left to the chin")
▸ adjective: dried out ("Hard dry rolls left over from the day before")
▸ adjective: unfortunate or hard to bear ("Had hard luck")
▸ adjective: not yielding to pressure or easily penetrated ("Hard as rock")
▸ adjective: metaphorically hard ("A hard fate")
▸ adjective: of speech sounds
▸ adjective: having a high alcoholic content ("Hard liquor")
▸ adjective: having undergone fermentation ("Hard cider")
▸ adjective: 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?")
▸ adjective: characterized by toilsome effort to the point of exhaustion; especially physical effort ("Hard labor")
▸ adverb: with effort or force or vigor ("The team played hard")
▸ adverb: to the full extent possible; all the way ("Hard alee")
▸ adverb: slowly and with difficulty ("Prejudices die hard")
▸ adverb: causing great damage or hardship ("Industries hit hard by the depression")
▸ adverb: with firmness ("Held hard to the railing")
▸ adverb: earnestly or intently ("Thought hard about it")
▸ adverb: with pain or distress or bitterness ("He took the rejection very hard")
▸ adverb: very near or close in space or time ("It stands hard by the railroad tracks")
▸ adverb: into a solid condition ("Concrete that sets hard within a few hours")
▸ adverb: indulging excessively
▸ name: A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #12415)
▸ Also see hard