sudden → suddenly happy→ happily careful→ carefully nervous → nervously personal→ personally obvious→ obviously
forgive →forgiveness fit → fitness loud → loudness happy → happiness helpful → helpfulness shy → shyness
imagine → imagination indicate → indication decorate → decoration educate → education attract → attraction invent → invention
friend → friendship relation→ relationship leader→ leadership member → membership owner→ ownership partner→ partnership
perform → performance appear → appearance enter → entrance occur → occurrence differ → difference exist → existence
shock → shocked/shocking embarrass → embarrassed/embarrassing surprise → surprised/surprising disappoint → disappointed/disappointing worry → worried/worrying frustrate → frustrated/frustrating
wanted → unwanted like→ unlike usual→ unusual
known → unknown lucky→ unlucky necessary→ unnecessary
courage →courageous danger → dangerous humor → humorous mountain → mountainous continue → continuous vary → various
weak → weaken dark → darken deep → deepen short → shorten worse → worsen bright → brighten
value → valuable comfort → comfortable desire → desirable enjoy → enjoyable notice → noticeable accept → acceptable
use → useless are → careless self → selfless worth → worthless home → homeless end → endless
connect → disconnect honest → dishonest approval → disapproval appear → disappear satisfied → dissatisfied advantage → disadvantage
real → reality complex → complexity popular → popularity safe → safety cruel → cruelty certain → certainty
improve → improvement encourage → encouragement require → requirement arrange → arrangement develop → development treat → treatment
wealth → wealthy sex → sexy hunger → hungry blood → bloody mess → messy noise → noisy
democracy → democratic economy → economic academy → academic scene → scenic hero → heroic poet → poetic
regret → regretful hope → hopeful power → powerful color → colorful use → useful help → helpful
coast → coastal continent → continental region → regional globe → global environment → environmental origin → original
attract → attractive act → active impress → impressive effect → effective create → creative infect → infective
employer 僱主 trainer 訓練師 payer 付款人 employee 僱員 trainee 受訓者 payee 受款人
fortune → misfortune rule → misrule judgment → misjudgment treat → mistreat hear → mishear understand → misunderstand
efficient → efficiency frequent → frequency consistent → consistency pregnant → pregnancy constant →constancy vacant → vacancy
persist → persistent differ → different obey → obedient ignore → ignorant observe → observant expect → expectant
optimism 樂觀 racism 種族主義 realism 現實主義
journalism 新聞業 tourism 旅遊業 criticism 批評
passion → passionate fortune → fortunate motive → motivate origin → originate active → activate regular → regulate
appropriate → inappropriate expensive → inexpensive perfect → imperfect convenient → inconvenient possible → impossible polite → impolite
image → self-image control → self-control respect → self-respect confident → self-confident aware → self-aware evident → self-evident
comedy → comedian magic → magician music → musician library → librarian history → historian politics → politician
two-legged 雙腳的 cold-blooded 殘酷的 red-faced 臉紅的
kind-hearted 心地善良的 good-natured 脾氣好的 short-sighted 短視近利的
bestselling 暢銷的 hardworking 用功的 neverending 永無止境的
outstanding 傑出的 longlasting 持久的 fastgrowing 成長迅速的
handheld 手持的 time-honored 悠久傳統的 home-grown 自產的
man-made 人工的 time-proven 經過時間證明的 war-torn 受戰爭蹂躪的
create → recreate pay → repay call → recall
arrange → rearrange build → rebuild form → reform
section → intersection change → interchange national → international action → interaction marry → intermarry personal → interpersonal
priest → priesthood parent → parenthood adult → adulthood neighbor → neighborhood brother → brotherhood state → statehood
race → racism tour → tourism terror → terrorism
journal → journalism criticize → criticism real → realism
system → ecosystem tourism → ecotourism label → eco-label
disaster → eco-disaster friendly → eco-friendly sensitive → eco-sensitive
system → ecosystem tourism → ecotourism label → eco-label
disaster → eco-disaster friendly → eco-friendly sensitive → eco-sensitive
see → foresee tell → foretell warn → forewarn
head → forehead leg → foreleg arm → forearm
triangle 三角形 triathlon 鐵人三項 tripod (相機的) 三腳架 operate → cooperate star → costar writer → cowriter
exist → coexist owner → coowner educational → coeducational
stable → stabilize civil → civilize general → generalize economy → economize apology → apologize memory → memorize
cello → cellist communism → communist tour → tourist piano → pianist psychology → psychologist type → typist
lone → lonesome trouble → troublesome awe → awesome fear → fearsome bother → bothersome worry → worrisome
ordinate → subordinate culture → subculture way → subway conscious → subconscious standard → substandard normal → subnormal
lie → underlie estimate → underestimate water → underwater wear → underwear developed → underdeveloped paid → underpaid
transport 運輸 transform 改變 translate 翻譯
transfer 轉移 transplant 移植 transmit 傳輸
crossroads 十字路口 crosswalk 行人穿越道 crosscurrent 交叉水流
crosscheck 交叉檢查 crosscultural 跨文化的 crosslegged 盤腿
superficial 膚淺的 superstar 超級巨星 supervise 監督
