This is the 1097th most frequent German word.
höchste
"Highest" or "supreme."
höchste is used to denote the superlative degree of the adjective 'hoch' (high).
Das ist die höchste Erhebung in diesem Gebiet.
This is the highest elevation in this area.
höchste is used in the idiomatic expression 'höchste Zeit', meaning 'the highest time' or urgency.
Höchste Zeit, dass wir gehen!
It's about time we leave!
höchste describes the level of priority, indicating it's the greatest or most important of its kind.