1. shade, shadiness, shadowiness

relative darkness caused by light rays being intercepted by an opaque body

Example Sentences:
'it is much cooler in the shade'
'there's too much shadiness to take good photographs'

Synonyms

• shade
• shadowiness

2. shadiness

of questionable honesty or legality

Example Sentences:
'they acted with such obvious shadiness that they were instantly recognizable'
'the shadiness of their transactions'