形容詞 healthy:

1. having or indicating good health in body or mind; free from infirmity or disease
2. financially secure and functioning well
3. promoting health; healthful
   同義詞：salubrious, good for you
4. physically and mentally sound or healthy
   同義詞：fit
5. exercising or showing good judgment
   同義詞：intelligent, levelheaded, level-headed, sound

1. Although my uncle is old, he looks very strong and healthy.
   我的叔叔雖然老了，但他看上去還是很健壯。
2. A healthy shoot should form a strong graft.
   健康的嫩枝可以長成強壯的接穗。
3. His inmost thoughts are not healthy.
   他心靈深處的思想是不健康的。
4. His grandpa is healthy.
   他的祖父身體健康。

health.y

adj.（形容詞）
health.i.er,health.i.est
Possessing good health.
健康的：擁有良好健康狀況的
Conducive to good health; healthful:
有益健康的：有助健康的；增進健康的：
例句：
healthy air.
有益健康的空氣

Indicative of sound, rational thinking or frame of mind:
健全的：顯示出健全理性的思索能力或心態(tài)的：
例句：
a healthy attitude.
健康的態(tài)度

Sizable; considerable:
相當大的；很大的：
例句：
a healthy portion of potatoes; a healthy raise in salary.
相當多的土豆；大幅度提高工資

【引伸】
health.ily
adv.（副詞）
health.iness
n.（名詞）
<參考詞匯><同義詞>healthy,sound,wholesome,hale,robust,well,hardy,vigorousThese adjectives are compared as they mean being in or indicative of good physical or mental health.
這些形容詞具有可比性，因為它們都表示處于或表現(xiàn)出良好的生理或心理健康的。
Healthy stresses the absence of disease and often implies energy and strength:
Healthy 強調(diào)沒有疾病的并通常暗示充滿精力或力量的：
例句：
a rosy, healthy infant.
紅潤健康的嬰兒；

例句：
If you exercise regularly and eat properly, you`ll stay fit and healthy.
如果你經(jīng)常鍛煉并適當飲食，你會保持健康的。

Sound emphasizes freedom from injury, imperfection, or impairment:
Sound 強調(diào)不受傷害的、無缺陷的或無損害的：
例句：
.You should pray for a sound mind in a sound body. (Juvenal).
.你應祈盼在健全的身體里有健全的頭腦. （朱維納爾）。

Wholesome suggests appealing healthiness and well-being:
Wholesome 暗示有吸引力的健康和舒適：
例句：
.a broad grin on his ugly wholesome face. (Archibald Marshall).
.他丑陋但氣色很好的臉上露出燦爛的笑容. （阿爾奇伯德·馬歇爾）。

例句：
.Exercise develops wholesome appetites. (Louisa May Alcott).
.鍛煉有助于好胃口. （路易莎·梅·阿爾柯特）。

Hale stresses freedom from infirmity, especially in elderly persons,whilerobust emphasizes healthy strength and ruggedness:
Hale 強調(diào)老年人不虛弱的，而robust 則強調(diào)健康的力量和粗壯：
例句：
.He is pretty well advanced in years, but hale, robust, and florid. (Tobias Smollett).
.他年紀雖相當大了但仍很健壯、結實且臉色紅潤. （托比亞斯·斯摩萊特）。

Well indicates absence of or recovery from sickness:
Well 表示不得病或從病中復原：
例句：
Her mother is not a well woman.
她母親身體多病。

Hardy implies robust and sturdy good health:
Hardy 意指強壯和堅韌：
例句：
hardy mountaineers of Alpine regions.
阿爾卑斯地區(qū)強健的山地居民。

Vigorous suggests healthy, active energy and strength:
Vigorous 強調(diào)健康的、積極有活力的和有力量的：
例句：
.a vigorous old man, who spent half of his day on horseback. (W.H. Hudson).
.一位每日有半天光景呆在馬背上的精力充沛的老人. (W·H·哈德遜）

The distinction in meaning betweenhealthy (.possessing good health.) and healthful (.conducive to good health.) was ascribed to the two terms only as late as the 880`s. This distinction, though tenaciously supported by some critics,is belied by citational evidence—evidence clearly indicating thathealthy and healthful have shared the meaning .conducive to good health. since at least the mid-'th century, or for more than 400 years. Use ofhealthy in this sense is to be found in the works of a broad group of distinguished speakers and writers of English, with this example being typical:
Healthy （.擁有良好的健康狀況.）和 healthful （.有益于健康的.）在意思上的區(qū)別直到9世紀80年代才被確定。 雖然有些專家固執(zhí)地支持這種區(qū)別，但它與引文中得出的證據(jù)不符——這些證據(jù)清楚地表明至少從'世紀中葉或者說四百多年來，healthy 和 healthful 都有.有益于健康的.這一意義。 Healthy 這一意義從一大群杰出的演講者和作家的作品中可以找到，在這個意義上的用法以這個例子最具代表性：
例句：
.Gardening . . . and working in wood, are fit and healthy recreations for a man of study or business. (John Locke).
.從事園藝 . . . 和在樹林中勞作對于學習或上班的人來說，是一項適合而健康的消遣. （約翰·洛克）。

Therefore, bothhealthy and healthful are correct in these contexts: a healthy climate, a healthful climate; a healthful diet, a healthy diet.
所以在這樣的語境中，healthy 和 healthful 都是正確的： a healthy climate，a healthful climate； a healthful diet，a healthy diet