名詞 fad:

1. an interest followed with exaggerated zeal
   同義詞：craze, furor, furore, cult, rage

1. His interest in photography is only a passing fad.
   他對(duì)攝影的愛好僅是一時(shí)的興致。
2. A short-lived popular fashion; a fad.
   短暫的時(shí)尚：流行一時(shí)的狂熱
3. Having the nature of a fad.
   具有追求時(shí)尚的天性的

fad

n.（名詞）
A fashion that is taken up with great enthusiasm for a brief period of time; a craze.
時(shí)尚：短暫的帶有過分狂熱的一種追求；狂熱

來源：
Possibly from fidfad [fussy person, fussy]
可能源自 fidfad [小題大作的人，抱怨的]
from fiddle-faddle
源自 fiddle-faddle

【引伸】
fad.dism
n.（名詞）
fad.dist
n.（名詞）
fad.dy
adj.（形容詞）
<注釋>Although we do not know for certain the origin offad, first recorded in 834with the sense .whim, crotchet,.we can suggest one possibility.In 754, 80 years before this occurrence offad, we find an instance of the wordfidfad, meaning .a fussy person.:.The youngest . . . is, in everything she does, an absolute fidfad..Fidfad is found in the latter part of the 9th century with the sense .small detail, frill,. and the adjectivefidfad, meaning .frivolous, fussy, petty,. is recorded in 830.Fad could thus be a shortened form of fidfad, itself shortened from fiddle-faddle.
盡管我們不能確定fad 的起源， 它于834年首次被記錄，用于表達(dá).怪念頭，異常態(tài)度或習(xí)慣.這一意思，我們?nèi)钥梢蕴岢鲆环N可能。在754年，比fad 的出現(xiàn)早80年， 我們發(fā)現(xiàn)了一個(gè)詞例fidfad， 表示.一個(gè)小題大作的人.：.這個(gè)年輕人…所做的一切事情都完全地小題大作。.在9世紀(jì)下半葉，fidfad 被發(fā)現(xiàn)有.小的細(xì)節(jié)，飾邊.的意思， 而且形容詞fidfad 還表示.無用的，大驚小怪的，不重要的.的意思， 于830年被記錄。因此Fad 可能是 fiddle-faddle 被縮寫為 fidfad 后的簡(jiǎn)便形式