noun
Refers to the very first part or initial stage of something, such as a speech, performance, event, or period.
彼のスピーチは出だしからつまずいた。
His speech stumbled right from the start.
この曲の出だしが好きだ。
I like the opening of this song.
始まり is a more general word for 'beginning' or 'origin', while 出だし emphasizes the very first moments or initial phase, often of an action or performance.
冒頭 is more formal and often used for the opening of a written work, speech, or formal statement, whereas 出だし is more colloquial and can apply to any start.
Compound of 出 (de, 'coming out') + だし (dashi, nominalized form of 出す, 'to put out'). Literally 'the putting out', referring to the initial emergence or start of something.