1. (a.) Apparently moving backward or deteriorating; as, a retrograde motion\; contrary to the succession of the signs, that is, from east to west, as a planet.

2. (a.) Tending or moving backward; having a backward course; contrary; -- opposed to progressive.

3. (a.) Declining from a better to a worse state; as, a retrograde people; retrograde ideas, morals, etc.

4. (v. i.) To go in a retrograde direction; to move, or appear to move, backward, as a planet.

5. (v. i.) Hence, to decline from a better to a worse condition, as in morals or intelligence.

aft after aftermost atavistic back backslide backward cock coming apart cracking crumbling decadent decline declining degenerate descend deteriorate deteriorating disimprove disintegrate disintegrating draining drooping dwindling ebbing effete fading failing fall astern fall back fall behind falling flagging fragmenting get behind get worse go backwards go behind going to pieces grow worse hind hinder hindermost hindhand hindmost invert jerk back languishing lapse lapse back let down lose ground marcescent pining posterior postern pull back reactionary rear rearmost rearward recede recessive recidivate recidivist recidivous regress regressive relapse retract retral retreat retroactive retrocede retrocessive retroflex retrogress retrogressive retrorse retroverse retrovert return returnable reverse reversible reversional reversionary revert revertible revulsionary rot shriveling sicken sink sinking slacken sliding slip back slipping slumping subsiding tabetic tail waning wasting wilting withering worsen worsening