perhumanus

pĕr-hūmānus, a, um, adj., very kind, very courteous, very polite (class.):

sermo,

Cic. Q. Fr. 2, 6, 1:

epistula,

id. Att. 16, 12. — Adv.: pĕrhūmānĭter, very kindly, very politely:

scribere ad aliquem,

Cic. Fam. 7, 8, 1.