Not habitually or commonly occurring |
UNUSUAL |
Numbers of people or things classed together |
GROUPS |
Once ... a time |
UPON |
Protective structures to prevent beaches washing away |
BULWARKS |
Reflection of sound wave |
ECHO |
Relative heaviness |
WEIGHT |
Set of interrelated parts |
SYSTEM |
Small migratory birds |
SWALLOWS |
The basis for belief or disbelief |
EVIDENCE |
The king of rock 'n roll |
PRESLEY |
The strange ringtone is gas |
NITROGEN |
These present times |
NOWADAYS |
They're very seldom seen |
RARITIES |
Thoughtless, inattentive |
CARELESS |
Toy spool that's reeled up and down on a string |
YOYO |
Uncover, find out |
DISCOVER |