left the straight narrow (verb) backslide: go astray
Sinonime: easygoing,
laid-back*,
loose, low-pitched, muffled, muted, played down,
quiet,
relaxed, restrained,
sober, soft-sell, softened,
subtle, toned down, understated
Antonime: energized, high-key, high-strung,
nervous, pumped up