1.
If you describe something as ~, you mean that it is strange and often frightening, because it is different from what you normally expect.
The aircraft rose with ~ speed on take-off...
The altered landscape looks ~ and weird.
ADJ
~ly
The house was ~ly silent.
...~ly cold conditions.
ADV: ADV adj
2.
Behaviour that is ~ seems artificial and not normal or genuine.
She gave him a bright, determined smile which seemed ~.
= false
ADJ: usu v-link ADJ
~ly
Try to avoid shouting or speaking ~ly.
ADV: ADV with v