They had implicit trust in each other's abilities.
unwavering belief
Frequency:
45
%
Her unwavering belief in herself helped her succeed.
deep faith
Frequency:
40
%
His deep faith in humanity never wavered.
Idiomatic Expressions for trusting
Phrase: trust fall
Meaning: a team-building exercise where one person falls backwards and trusts that others will catch them
Usage: We did a trust fall activity at the retreat to build trust and communication within the team.