unlachrymose

As a noun vex

is (space|esa).

As an adjective unlachrymose is

not lachrymose.

As adjectives the difference between melancholy and unlachrymose

is that melancholy is affected with great sadness or depression while unlachrymose is not lachrymose.

As a noun melancholy

is (historical) black bile, formerly thought to be one of the four "cardinal humours" of animal bodies.

As a noun dejection

is dejection, defecation.

As an adjective unlachrymose is

not lachrymose.