1) friendly — unfriendly
2) kind — unkind
3) happy — unhappy
4) tidy — untidy
5) usual — unusualy
6) necessary — unnecessary
7) comfortable — uncomfortable
Negative prefix: un-
1) friendly — unfriendly
2) kind — unkind
3) happy — unhappy
4) tidy — untidy
5) usual — unusualy
6) necessary — unnecessary
7) comfortable — uncomfortable
Negative prefix: un-