Synonyms of on-the-level

1 Syllable
straight, just, fair
2 Syllables
even, decent, squarest, squaring, upright, sporting, squarer, equal
3 Syllables
unbiased, straightforward, impartial, ethical
4 Syllables
objective, aboveboard, impersonal, nonpartisan, fair-and-square, equitable
5 Syllables
sportspersonlike, unprejudiced