unimposing

/ˌʌnɪmpˈəʊzɪŋ/

/ˌʌnɪmpˈoʊzɪŋ/

unimposing

not impressive, significant, or noteworthy in appearance, size, or manner

Examples

1. Despite his slight and unimposing frame, he had a strong personality and an uncompromising will.