Apathy
Passivity, unconcern
Progenitor
Ancestor, forefather
Embankment
Barrier, ridge
Decorum
Refinement, dignity
Complaisance
Pride, contentment
Esponsed
Assist, embrace
Undulation
Wavelike motion
Inadvertently
Accidentally, mistakenly
Elucidate
Illuminate, gloss
Veneration
Praise, devotion
Lurid
Dazzling, bright
Masquerade
Bluff, deception
Sojourn
Vacation, stopover
Sonorous
Ringing, melodious
Visceral
Inward, instinctive