Against popular opinion, he chose to travel solo around the world.
expert predictions
Frequency:
50
%
Against expert predictions, the underdog team emerged victorious.
common belief
Frequency:
45
%
Against common belief, she decided to pursue a career in music.
Idiomatic Expressions for against (all) expectations
Phrase: against all predictions
Meaning: contrary to what was expected or forecasted
Usage: The team won the championship against all predictions, surprising everyone.