undesigning

un·de·sign·ing

U0063500 (ŭn′dĭ-zī′nĭng)adj. Having no ulterior motives; straightforward.

undesigning

(ˌʌndɪˈzaɪnɪŋ) adj(of a person) frank; straightforward

un•de•sign•ing

(ˌʌn dɪˈzaɪ nɪŋ)

adj. not given to underhand schemes or selfish motives; without an ulterior design. [1665–75]
Translations
sincero