Synonyms:
- artless,
- bluff,
- blunt,
- candid,
- childlike,
- confiding,
- direct,
- frank,
- guileless,
- ingenu,
- ingenuous,
- innocent,
- naive,
- open,
- openhearted,
- outspoken,
- plain,
- simple,
- simplehearted,
- simpleminded,
- sincere,
- single-hearted,
- single-minded,
- trustful,
- trusting,
- unguarded,
- unreserved,
- unsophisticated,
- unsuspicious,
- unwary