せざるを得ない[sezaruwoenai] cannot avoid doing
一挙両得[ikkyoryoutoku] killing two birds with one stone
一得[ittoku] one advantage
一得一失[ittokuisshitsu] gaining some and losing some
課税所得[kazeishotoku] taxable income

我が意を得る[wagaiwoeru] to approve of
会得[etoku] understanding
獲得[kakutoku] acquisition
既得[kitoku] vested
既得権[kitokuken] vested rights

この先の心持ち[konosakinokokoromochi] feelings from this point on
御心配なく[goshinpainaku] don't worry
愛郷心[aikyoushin] love of one's hometown
愛国心[aikokushin] patriotic feelings
悪心[akushin] evil thought

悪心[oshin] nausea
安心[anshin] relief
安心立命[anshinritsumei] spiritual peace and enlightenment
以心伝心[ishindenshin] telepathy
依頼心[iraishin] spirit of dependence

に違いない[nichigainai] I am sure
違い[chigai] difference
違う[chigau] to differ (from)
違える[chigaeru] to change
違憲[iken] unconstitutionality

違算[isan] miscalculation
違式[ishiki] informality
違背[ihai] violation
違犯者[ihansha] violator (of a law)
違犯[ihan] violation (of law)