carissime
carissime is a Latin form of carus, meaning “dear; costly”. It is the vocative singular masculine superlative adjective.
Found 79 times in the Latin texts on Socratos.
Where it is used
Cicero, Letters to his Friends 11.21.3: … utem scribis te, quod pro te ipso non facias, id pro me, ut de me timeas aliquid, omni te, vir optime mihique carissime, Brute, de me metu libero; ego enim quae provideri poterunt non fallar in iis, quae cautionem non habebunt de …
All forms of carus (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.