お大事に[odaijini] take care of yourself
事がある[kotogaaru] (something) has occurred
事にすると[kotonisuruto] perhaps
事になる[kotoninaru] it has been decided (so) that
事によって[kotoniyotte] via

どうという事もない[doutoiukotomonai] nothing special
悪事[akuji] evil deed
暗殺事件[ansatsujiken] assassination
囲み記事[kakomikiji] (newspaper) column
遺事[iji] reminiscences

其の後[sonoato] after that
已後[igo] after this
一死後[isshigo] after one out (in Baseball)
気後れ[kiokure] nervous
紀元後[kigengo] post-era

空前絶後[kuuzenzetsugo] (so marvelous or horrible that it may be) the first and probably the last
兄後[anigo] elder brother
月後れ[tsukiokure] a month or older
午後[gogo] afternoon
午後中[gogojuu] throughout the afternoon

コスト効率[kosutokouritsu] cost effectiveness
圧縮率[asshukuritsu] compressibility
引率[insotsu] leading
円周率[enshuuritsu] Pi (3.1415926..)
黄金率[ougonritsu] golden mean

拡大率[kakudairitsu] rate of magnification
確率[kakuritsu] probability
確率モデル[kakuritsumoderu] stochastic model
確率過程[kakuritsukatei] stochastic process
確率誤差[kakuritsugosa] random error

確かに[tashikani] surely
確かめる[tashikameru] to ascertain
確言[kakugen] assertion
確乎[kakko] firm
確執[kakushitsu] discord

確実[kakujitsu] certainty
確実性[kakujitsusei] certainty
確実度[kakujitsudo] certainty
確証[kakushou] positive proof
確信[kakushin] conviction