adv. [f. prec. + -LY.] In an amateurish manner.
1869. New-York Times, 19 July, 5/6. Others of whom sang so very amateurishly as to remind us forcibly that Artemus Ward was the representative of a large class when he said: As a singist I am not a success.
1882. Jrnl. Educ., No. 155. 171. Those who dabbled amateurishly in useful work.