Six-letter words - change zero to two letters make a new word (Part 1)

Thread Games
1

Starting a new thread because the earlier one was closed for having more than 10k posts. The last word in the previous thread:

flowed

2

wifely

3

lively

4

lonely

5

lovely

6

lovers

7

clover

8

Glover

9

Grover

10

groves

11

egress

12

ogress

13

Oregon

14

region

15

legion

16

niggle

17

wiggle

18

giggle

19

tingle

20

dangle