Question

verb and adjective forms of

1)certain
2)plan
3)rough
4)tough
5)sleep
6)foolish
7) night

Answer 1

1)   verb:  ascertain              ....to be certain 
       adj:  certain.
     
2)  to Plan
      Adj:  planned

3)  roughen up, roughen
      Adj: rough,  roughened

4) Toughen,  toughen up, to be tough,
     Adj: tough, toughened

5) verb:  to sleep,      adj: Sleepy.

6)  verb: to fool
       adj : foolish

7)  adj:   night    like   it is a night sky.
              nighty     it is a nighty night.. 

      verb: to nighten ?? 
        verb:  night out