WordNet

with pain or distress or bitterness; "he took the rejection very hard"
(of light) transmitted directly from a pointed light source (同)concentrated
with firmness; "held hard to the railing" (同)firmly
very strong or vigorous; "strong winds"; "a hard left to the chin"; "a knockout punch"; "a severe blow" (同)knockout, severe
causing great damage or hardship; "industries hit hard by the depression"; "she was severely affected by the banks failure" (同)severely
being distilled rather than fermented; having a high alcoholic content; "hard liquor" (同)strong
unfortunate or hard to bear; "had hard luck"; "a tough break" (同)tough
(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"
dispassionate; "took a hard look"; "a hard bargainer";
dried out; "hard dry rolls left over from the day before"
earnestly or intently; "thought hard about it"; "stared hard at the accused"
into a solid condition; "concrete that sets hard within a few hours"
resisting weight or pressure
slowly and with difficulty; "prejudices die hard"
to the full extent possible; all the way; "hard alee"; "the ship went hard astern"; "swung the wheel hard left"
very near or close in space or time; "it stands hard by the railroad tracks"; "they were hard on his heels"; "a strike followed hard upon the plants opening"
with effort or force or vigor; "the team played hard"; "worked hard all day"; "pressed hard on the lever"; "hit the ball hard"; "slammed the door hard"
a pattern of symptoms indicative of some disease
a complex of concurrent things; "every word has a syndrome of meanings"
the 5th letter of the Roman alphabet (同)e
the base of the natural system of logarithms; approximately equal to 2.718282...

PrepTutorEJDIC

(物体が)『堅い』,(手触りが)堅固な,しっかりした / 『難しい』,努力を要する / 《名詞の前にのみ用いて》(人が)『精力的な』,勤勉な / 激しい,猛烈な / (生活などが)耐え難い,つらい / (季節・天候などが)厳しい;(雨・風などが)激しい / (人が)厳格な;(行為などが)容赦しない,無情な / (方針・条件などが)妥協(譲歩)しない,厳しい / (感情が)うらみを含む,憤然とした / (体が)筋肉質の,がんじょうな / (紙幣に対して)硬貨の,(小切手などに対して)現金の;(貨幣が)容易に兌換(だかん)できる / (子音が)硬音の(c,gがcome, goのように[k],[g]と発音される) / アルコール分の多い / (水が)硬質の / (エックス線が)透過能力が大きい / 一生懸命に,『熱心に』 / 『強く』,激しく,大いに / やっと,かろうじて / 『堅く』 / ひどく悲んで / 接近して
(疾患の徴候となる一群の)症徴候,症候群 / (事件・社会的状態などのパターンを示す)徴候形態
einsteiniumの化学記号