| Keenly enthusiastic |
AVID |
| Not able to be disentangled |
INEXTRICABLE |
| On (a ship or train) |
ABOARD |
| Portending evil |
OMINOUS |
| Region; space |
AREA |
| Reverberated |
ECHOED |
| Second-hand |
USED |
| Southwestern US state |
ARIZONA |
| Strong impulses |
URGES |
| Superior group |
ELITE |
| System of names |
NOMENCLATURE |
| Very thin paper |
TISSUE |