expression:

• a single mistake can ruin all one's hard work; one blunder can render useless a long period of effort; one fart in a hundred days' sermons [literal] - proverb

noun:

• hard soap; soda soap ➜ ソーダ石鹸

noun:

• hard puncher

noun:

• impossibly hard video game - slang

expression / noun:

• (person who is) once bitten twice shy; someone who has become overly cautious due to a bad experience - idiom - four character idiom

ichidan verb / transitive:

• to treat leather, sharkskin, etc. with glue and pound until hard

expression / godan ~る verb:

• to think hard about (something that one doesn't know much of); to rack one's brain

noun:

• hard of hearing

adjective:

• hard to see; obscured ➜ 見にくい

noun:

• hard-link; hard link - IT term

expression / godan ~く verb:

• to work hard; to toil; to moil; to keep one's nose to the grindstone; to slug away

noun:

• hard target - Military term ➜ ソフトターゲット

expression / godan ~る verb (irregular):

• to be hard to deal with; to be sinister-looking; to be idiosyncratic

expression / adjective:

• hard-nosed; strong-willed; determined; unyielding; stubborn; resolute; assertive; headstrong ➜ 鼻っ柱の強い

adverb / ~する noun:

• sound of something thick and soft being pierced by something sharp and hard - onomatopoeia
• containing sullen anger or discontent

~く adjective (archaic):

• hard; solid; tough - archaism ➜ 堅い

adjective:

• hard-to-do; difficult; tough; awkward; tricky

adjective:

• hard to see
• painful to look at

expression:

• It is hard to explain; It is hard to say

expression / adjectival noun:

• hard to believe; fabulous; unbelievable; incredible ➜ 様【よう】

expression / adjective:

• hard-nosed; strong-willed; determined; unyielding; stubborn; resolute; assertive; headstrong ➜ 鼻っ柱が強い

adjective:

• hard to ride

noun:

• hard training

noun:

• ball which is hard to hit or catch - Baseball term

expression / adjective:

• hard-nosed; strong-willed; determined; unyielding; stubborn; resolute; assertive; headstrong ➜ 鼻っ柱が強い