もっと

(1) 『much（多くの）』の比較級より大きな程度または範囲に(comparative of much; to a greater degree or extent; "he works more now"; "they eat more than they should")(comparative of much)(to a greater degree or extent)

⇒彼らは、必要以上に食べる(to a greater degree or extent)

(2) 加えて(in addition; "computer chess games are getting cheaper all the time; furthermore, their quality is improving"; "the cellar was dark; moreover, mice nested there"; "what is more, there's no sign of a change")(in addition)

⇒その上、変化の徴候がなかった(in addition)

(3) より大きな程度までに、またはより進んだ段階までに(to or at a greater extent or degree or a more advanced stage (`further' is used more often than `farther' in this abstract sense); "further complicated by uncertainty about the future"; "let's not discuss it further"; "nothing could be further from the truth"; "they are further along in their research than we expected"; "the application of the law was extended farther"; "he is going no farther in his studies")(to or at a greater extent or degree or a more advanced stage)

⇒彼の研究はこれ以上進まない(to or at a greater extent or degree or a more advanced stage)

(4) いくつかの形容詞と副詞の比較級を形成するために、使用される(used to form the comparative of some adjectives and adverbs; "more interesting"; "more beautiful"; "more quickly")(used to form the comparative of some adjectives and adverbs)

⇒もっと速く(used to form the comparative of some adjectives and adverbs)

(5) さらに、またはさらにもっと(in addition or furthermore; "if we further suppose"; "stated further that he would not cooperate with them"; "they are definitely coming; further, they should be here already")(in addition or furthermore)

⇒彼らは、確かに来ている；さらに、もう既にここにいるはずだ(in addition or furthermore)