הכי

הֲכִי • (hakhí)

1. Most, the most.

   ‏היא הילדה הכי גבוהה בכיתה.‎‎ ― hi hayaldá hakhí gvohá bakitá ― She is the tallest girl in the class.

   • 2016, Jessica Knoll, הנערה הכי בת־מזל בעולם [Luckiest Girl Alive], Kinneret, Zmora-Bitan, Dvir – Publishing House Ltd.:

• The adjective introduced by הֲכִי appears in the indefinite state, even though its subject is nearly always semantically definite.
• In more formal Hebrew, the superlative is more commonly expressed by using בְּיוֹתֵר‎ (b'yotér), or without an explicit “most”.