Настаивать (Imperfective aspect) // Настоять (Perfective aspect)
to hint,
to hint at smth,
to make insinuation,
to speak at smb.
Imperfective verbs have Present, Past and Future tenses.
Perfective verbs have Past and Future tenses.
PDF-file with all the forms in the sentences is available here - https://boosty.to/rulangclub.