Denshi Jisho — Online Japanese dictionary

最 さい 1: the most; the extreme;
2: () prime; conspicuous
Prefix, Na-adjective 
最下 さいか the lowest; the worst
Common word, Na-adjective, Noun, No-adjective 
最古 さいこ the oldest
Common word, Noun, No-adjective 
最後 さいご 1: last; end; conclusion; latest; most recent;
2: (Expression) (after -tara form or -ta form followed by "ga") no sooner than; right after (often having negative consequences);
3: (Archaism) one's final moments
Common word, Noun, No-adjective 
最期 さいご one's last moment; one's time of death
Common word, Adverbial noun, Noun 
最多 さいた the most
Common word, Noun 
最早 もはや 1: already; now;
2: no longer; not any more
Common word, Adverb 
最右 さいう right-most; rightmost
Noun, No-adjective 
最左 さいさ left-most
Noun, No-adjective 
最中 さなか in the middle of; height of; in course of; midst
Adverbial noun, Noun 
最上 もがみ best
Na-adjective, Noun 
最中 もなか wafer cake filled with bean jam
Noun 
最寄 もより nearest; neighbouring; neighboring; nearby
Irregular okurigana usage, Noun, No-adjective 
最寄り もより nearest; neighbouring; neighboring; nearby
Common word, Noun, No-adjective 
最愛 さいあい beloved
Common word, Noun, Suru verb, No-adjective 
最悪 さいあく the worst
Common word, Na-adjective, Noun 
最近 さいきん most recent; these days; right now; recently; nowadays
Common word, No-adjective, Adverbial noun, Temporal noun 
最高 さいこう highest; supreme; the most
Common word, Na-adjective, Noun, No-adjective 
最初 さいしょ beginning; outset; first; onset
Common word, No-adjective, Adverbial noun, Temporal noun 
最新 さいしん latest; newest; late-breaking (news)
Common word, Noun, No-adjective 
最善 さいぜん the very best
Common word, Noun 
最短 さいたん shortest
Common word, Noun, No-adjective 
最大 さいだい greatest; largest; maximum
Common word, Noun, No-adjective 
最低 さいてい 1: least; lowest; worst;
2: nasty; disgusting; horrible; yuck!
Common word, Na-adjective, Adverb, Noun, No-adjective 
最適 さいてき optimum; the most suitable
Common word, Na-adjective, Noun, No-adjective 
最も もっとも most; extremely
Common word, Adverb 
最遠 さいえん farthest; furthest; most remote
No-adjective 

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