rare. [f. FIT a. + -LY1.] = FIT a.

1

1573.  Tusser, Husb. (1878), 183.

        Giue childe that is fitly, giue babie the big,
  giue hardnes to youth and to roperipe a twig.

2

1840.  Browning, Sordello, VI. 441.

        ’Twere fitliest maintain the Guelfs in rule:
That makes your life’s work.

3