zweitbest
second-best
Standing in second place in a ranking according to quality, performance, or popularity.
Mit seiner Zeit lief er das zweitbeste Ergebnis des Tages.
With his time, he achieved the second-best result of the day.

second-best
Loading your saved state.
second-best
Standing in second place in a ranking according to quality, performance, or popularity.
Mit seiner Zeit lief er das zweitbeste Ergebnis des Tages.
With his time, he achieved the second-best result of the day.

The word is a compound of the ordinal number 'zweit-' (second) and the superlative 'best' (best). So it literally means 'in the second-best position'.
Er hat den zweitbesten Platz im Wettbewerb erreicht.
He achieved second-best place in the competition.
This pattern is very productive. You can combine it with other ordinal numbers ('drittbest' = third-best, 'viertbest' = fourth-best) and other superlatives ('zweitgrößte' = second-largest, 'zweitwichtigste' = second-most important).
Berlin ist die zweitgrößte Stadt Deutschlands.
Berlin is the second-largest city in Germany.
Like other adjectives, 'zweitbest-' is declined when it stands before a noun. But it can also stand at the end of a sentence without declension.
Wir haben uns für die zweitbeste Option entschieden.
We decided on the second-best option.
best
'best' and 'zweitbest' both describe high quality in a ranking. But the difference is important: 'best' means first place, that is, the highest quality or performance. 'zweitbest' means second place, so good, but not quite in first place. The words can be confused because both sound positive and often appear in comparisons. If something is surpassed by no one or nothing, you say 'best'. If only one thing is better, you say 'zweitbest'.

Dieses Hotel war ausgebucht, also nehmen wir die zweitbeste Möglichkeit.
This hotel was fully booked, so we'll take the second-best option.
Das ist die beste Lösung für unser Problem.
That is the best solution to our problem.