No definitions found for 'be diffident'
Perhaps one of these:
boat paddle,
bad faith,
body of water,
bad habit,
buddy-buddy,
buteo buteo,
body pad,
beat of a watch,
bedaubed,
bad debt,
beatified blessed ,
beatified,
bit bitten stung ,
boat davits,
beautified,
beat about,
body of the place,
beat of drum,
bit pattern,
buyout bid,
bath powder,
by deputation