(もっと)

もっとも
adverb
most, extremely
1. most, extremely
Indicates the highest degree or superlative.
This is the most important.
He is the most excellent player.
The most popular movie.

(もっと)も is the formal/written superlative adverb meaning "most." It modifies adjectives and verbs to express the highest degree.

PATTERN:
(もっと)も + adjective/verb: the most ~

COMMON COLLOCATIONS:

  • (もっと)重要(じゅうよう)な: the most important
  • (もっと)()い: the best
  • (もっと)(おお)い: the most (in quantity)
  • (もっと)(すぐ)れた: the most excellent

SIMILAR WORDS:

  • 一番(いちばん): most (everyday, casual) — preferred in conversation
  • (もっと)も: most (formal, written) — preferred in essays, speeches, news

Both are interchangeable in meaning, but (もっと)も sounds more polished.

CAUTION:
Do not confuse with もっと (more), which is comparative, not superlative. もっと(はや)く = faster; (もっと)(はや)い = the fastest.