English
Adverb
fastly (comparative more fastly, superlative most fastly)
- securely.
- We tied the rope fastly this time; we didn't want that mother **** bitch to get away again.
Related terms
- fast (sense of being secure)
Etymology 2
From fast + -ly.
Adverb
fastly (comparative more fastly, superlative most fastly)
- quickly