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adj. Pertaining to a nickname, usually indicating intimacy with the person.

n. A nickname, especially one indicating intimacy and formed through a shortening of the original name.

adj. Endearing; diminutive.

n. In Greek and Latin grammar, same as diminutive.

"Simple names appear to have been more frequent in early times, but some are in reality hypocoristic, i. e., abbreviated forms of compound names as Saul (asked), David (beloved) Nathan (he gave), etc., which were probably combined with a Divine name, Yah or 'El. Simple Names"

hypocoristically    hypocorism    hypocoristical   

endearing    diminutive