開かい始し

か

い

し

Common wordJLPTN3Freq.FrequencyTop 1,000

開始する · noun or participle which takes 'suru'

Form	Positive	Negative
Dictionary	開かい始しする	開かい始ししない
Polite	開かい始しします	開かい始ししません
Past polite	開かい始ししました	開かい始ししませんでした
Past	開かい始しした	開かい始ししなかった
Te-form	開かい始しして	開かい始ししないで
Desire	開かい始ししたい	開かい始ししたくない
Potential	開かい始しできる	開かい始しできない
Passive	開かい始しされる	開かい始しされない
Causative	開かい始しさせる	開かい始しさせない
Causative passive	開かい始しさせられる	開かい始しさせられない
Volitional	開かい始ししよう
Polite volitional	開かい始ししましょう
Imperative	開かい始ししろ	開かい始しするな
Conditional	開かい始しすれば	開かい始ししなければ
Tara conditional	開かい始ししたら	開かい始ししなかったら

Meanings

noun, noun or participle which takes 'suru', transitive verb, intransitive verb

start; beginning; commencement

Formal noun and suru-verb for the start of an event, operation, or period. Used in official announcements, schedules, and written contexts. Antonym: 終了 (end).

Antonyms: 終了

会かい議ぎの開かい始し時じ間かんは午ご後ご2時じです。
The meeting start time is 2 p.m.
新あたらしいプロジェクトを開かい始しする予よ定ていです。
We plan to start a new project.
サービスが来らい月げつから開かい始しされます。
The service will be launched next month.

See all 308 example sentences ›

Usage patterns

〈事こと〉を開かい始しするto start/commence something
来らい月げつからサービスを開かい始しする予よ定ていです。
We plan to start the service next month.
〈時とき〉に開かい始しするto begin at a specific time
会かい議ぎは午ご後ご三さん時じに開かい始しする。
The meeting starts at 3 p.m.
〈事こと〉が開かい始しされるfor something to be started (by an organization or authority)
新あたらしいプロジェクトが今こん週しゅう開かい始しされた。
A new project was started this week.

Expressions

配はい備び開かい始しstart of deployment

Kanji

開open, unfold, unseal
始commence, begin

Transitive / intransitive

開始 can be used both transitively and intransitively as a suru-verb: transitively, as in 「作業を開始する」(to start the work), and intransitively, as in 「作業が開始する」(the work starts).

Related words· 14

始はじまりN3
始まり is the everyday, general word for a start, while 開始 is the formal term used in official announcements and schedules.
スタートN4
スタート is a casual loanword for 'start' often used in sports or informal contexts, whereas 開始 is the formal written equivalent.
着ちゃく手しゅN1
着手 specifically means to begin working on a task or project, while 開始 more broadly refers to the start of any event, process, or period.
始はじまるN5
開始する is a formal, Sino-Japanese verb used in official announcements, while 始まる is the everyday intransitive word for something starting.

Show 10 more

キックオフ
開始 is the neutral, formal word for 'start' used in any context, while キックオフ is a sports-derived loanword often used for the energetic start of a project or event.
開かい始し時じ刻こく
開始 is the general verb/noun for 'starting' something, while 開始時刻 specifically names the clock time at which that start occurs.
始はじめるN5
開始する is a more formal, written Sino-Japanese word for starting something, while 始める is the everyday, general-purpose verb.
始し業ぎょう
開始 is a general word for 'starting' anything, while 始業 is used specifically for the start of a workday, business hours, or school day.
開かい幕まくN1
開始 is a neutral word for the start of any action or process, whereas 開幕 keeps the image of a curtain rising and is reserved for shows, seasons, or events.
オープニング
オープニング is a casual loanword for the start of an event, while 開始 is the more formal, native Japanese term for 'commencement'.
発ほっ足そくN1
開始 is a general word for starting anything, whereas 発足 is used specifically for the formal launch of an organization, project, or system.
始し動どう
開始 is a general, everyday word for 'beginning' anything, whereas 始動 is more specific to starting machinery or formally launching initiatives.
立たち上あげるN2
開始する is a formal, neutral word for 'to commence' an activity or process, while 立ち上げる carries a stronger sense of building something up from scratch.
創そう始し
開始 simply means starting an activity or process, while 創始 specifically implies being the first to create or establish something.

Opposites· 6

終しゅう了りょうN2
end; close; conclusion; termination
満まん了りょう
開始 marks the start of a term or period, while 満了 marks its formal expiration or completion.
終しゅう局きょく
開始 means the start of something, the direct opposite of 終局, which marks its final stage or conclusion.

Show 3 more

終しゅう結けつ
開始 means the start or commencement of something, the direct opposite of 終結, which means its end or conclusion.
打うち上あげN1
開始 means the start or beginning of something, the opposite of 打ち上げ used in the sense of the end or completion of a project.
了りょうN1
開始 means the formal “start” of something, the direct opposite of 了 meaning its “finish.”

Don't confuse with

開かい催さいN1
開始 means simply 'to start' an event or process, while 開催 means 'to hold' or 'host' an event, focusing on organizing it rather than just its onset.
開かい示じ
開始 means to start or begin something and is easily confused with 開示 because they share the kanji 開 and sound similar, but 開示 is about disclosing information, not starting it.

Word family· 15

開かい始し日び
start date; commencement date
放ほう送そう開かい始し
start of broadcast; sign-on
記き録ろく開かい始し
record start; start of recording
試し合あい開かい始し
start of a match; kickoff; beginning of a game
開かい始しタグ
opening tag; start tag

Show 5 more

開かい始し価か格かく
starting price; ask price; suggested opening price
開かい始し変へん数すう
starting variable; SV
開かい始し時じ刻こく
starting time; start time
攻こう撃げき開かい始し線せん
line of departure
開かい始しコドン
start codon; initiation codon

See all 15 in Explore →

Etymology

Sino-Japanese compound of 開 (open, start) and 始 (begin). The combination straightforwardly conveys the idea of commencing something.