Taken from Basic Welsh: A Grammar and Workbook by Gareth King Welsh Lesson Two: Nouns and noun plurals   Nouns are sorted by whether the word denotes man or woman Tad – father              mam – mother   When the two vowels in a word are a/e: feminine When the two vowels in a word are o/y: masculine   Masculine endings:                          Feminine endings: -ad      -iad                                         -aeth            -as -der     -did     -dod                            -en            -es -dra                                                     -fa -eb      -edd -had -I         -iant -ni -rwydd -wch   -wr -ydd    -yn   Plural endings: -au      -iau -on      -ion -i -od      -ed      -edd    -oedd  -ydd -ys (English loanwords)   Exceptions: Words that change internal vowels: Corff/cyrff     pabell/pebyll   Words that change internal vowels and endings: Braich/breichiau   Total exceptions: Dail – leaves/foliage            deilen – leaf Moch – pigs                          mochyn – pig   Exercise 1: Plural or Singular Read more…