| innocuous(adjective, simple, kindly, innocent, ignorant) |
| jejune(simple, innocent, trusting, juvenile) |
| lowbrow |
| naif |
| offenseless(adjective, kindly, ignorant, naive, unknowing) |
| outspoken(honest, plain, innocent, artless, unworldly) |
| raw(adjective, simple, new, natural, straightforward) |
| simplehearted(simple, easy, real, genuine, unaffected) |
| spontaneous(adjective, simple, easy, pure, innocent) |
| square(adjective, simple, honest, plain, innocent) |
| unadulterated(adjective, simple, natural, straightforward, naive) |
| unartificial(adjective, simple, honest, plain, natural) |
| unassuming(adjective, quiet, innocent, meek, compliant) |
| unproblematic |
| unschooled(adjective, simple, easy, honest, plain) |
| unserious |
| unstudied(adjective, simple, easy, honest, plain) |
| unsuspecting(simple, innocent, trusting) |
| unsuspicious(adjective, simple, kindly, innocent, ignorant) |
| unworldly(adjective, simple, easy, natural, straightforward) |