adv. +in like or similar manner +in addition +equally
1 similarly, in the same or like manner or way:
Penny is sitting quietly and you should do likewise.
2 as well, too, also, furthermore, further, besides, in addition, moreover, to boot:
There are many ways to take exercise and, likewise, many ways to avoid it.
Advanced English Dictionary
+adverb 1 (formal) the same; in a similar way: He voted for the change and he expected his colleagues to do likewise. 2 (formal) also: Her second marriage was likewise unhappy. 3 (spoken) used to show that you feel the same towards sb or about sth: 'Let me know if you ever need any help.' 'Likewise.'
Random quote: Better be ignorant of a matter than half know it.: Publilius Syrus