-ish:                     Spanish, childish, foolish

-ous:                    spontaneous, curious, envious

-al:                       regional, universal, ancestral

-ful:                      wonderful, helpful, useful

-ic:                       scientific, terrific, athletic

-(a, i)ble:              impossible, comfortable, flexible

-en:                      wooden, golden, broken

-ive:                     active, passive, productive

-(a,e)nt:                significant, dependent

-less:                    useless, helpless, hopeless

-ly:                       monthly, friendly, lovely

-y:                        windy, sunny, cloudy