Meaning

adjective not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered

adjective original and of a kind not seen before

adjective lacking training or experience

originFrom Middle English newest, from Old English nīwost, from Proto-Germanic *niwistaz, from Proto-Indo-European *néwisth₂os, superlative of *néwos/*néwyos (whence new). Cognate with Scots newest, Dutch nieuwst, German neueste, neuste, Icelandic nýjastur, Gothic 𐌽𐌹𐌿𐌾𐌹𐍃𐍄𐍃 (niujists), Ashkun nustári (“before”), Kamkata-viri nüštë́ř (“before”), Waigali nüst (“before”), Vedic Sanskrit नविष्ठ (náviṣṭha).

Etymology from Wiktionary, CC BY-SA 3.0