• 初はつ

  first, new

• 初版しょはん

  first edition

• 初恋はつこい

  first love, puppy love

• 初日しょにち

  first day, opening day

• 初出しょしゅつ

  first appearance

• 初戦しょせん

  first match (in a series)

• 初代しょだい

  first generation, founder

• 初演しょえん

  first performance, premiere

• 初頭しょとう

  beginning (of a century, etc.)

• 初歩しょほ

  basics, rudiments, elements, ABCs of ...

• 初陣ういじん

  one's first campaign, one's first battle

• 初旬しょじゅん

  first 10 days of the month

• 初級しょきゅう

  elementary level, beginner level

• 初雪はつゆき

  first snow (of the season), first snowfall

• 初回しょかい

  first time, first innings, initial attempt

• 初年しょねん

  first year, early years (of a reign or era)

• 初期しょき

  early days, early years, early stages, initial stages, beginning

• 初老しょろう

  past middle age, nearing old age, near-elderly

• 初詣はつもうで

  first shrine visit of the New Year

• 初球しょきゅう

  pitcher's first pitch (to batter, or in the game)

• 初夏しょか

  early summer

• 初心しょしん

  one's original intention, one's initial enthusiasm

• 初夢はつゆめ

  first dream of the New year (believed to foretell one's luck)

• 最初さいしょ

  beginning, outset, first, onset

• 年初ねんしょ

  beginning of the year

• 当初とうしょ

  beginning, start, outset

• 初めるそめる

  to begin to

• 初心者しょしんしゃ

  beginner

• 初挑戦はつちょうせん

  first challenge, first try

• 初対面しょたいめん

  first meeting, first interview with

• 初舞台はつぶたい

  debut, initial stage appearance

• 初任給しょにんきゅう

  initial salary, starting salary, entry-level salary

• 初場所はつばしょ

  New Year's Tournament (held in Tokyo in January)

• 初売りはつうり

  first business conducted by retailers in the New Year

• 初めてはじめて

  for the first time

• 初めにはじめに

  first, firstly, first of all, to begin with, in the beginning, at the beginning

• 月初めつきはじめ

  beginning of the month

• 日本初にほんはつ

  first (of its kind) in Japan

• 初期費用しょきひよう

  initial costs, up-front costs, front-end costs, start-up costs

• 書き初めかきぞめ

  first calligraphy of the year

• 初心者向けしょしんしゃむけ

  beginner-friendly, (intended) for beginners, aimed at beginners

• 初めましてはじめまして

  nice to meet you, I'm glad to make your acquaintance, how do you do?

• 初ウブ

  inexperienced (in life experience), unsophisticated, green, wet behind the ears

• 初子ういご

  first child

• 初口しょくち

  beginning

• 初審しょしん

  first trial

• 初役はつやく

  first role

• 初婚しょこん

  first marriage

• 初産ういざん

  first childbirth

• 初孫ういまご

  first grandchild