Still, he had not gained a sufficient number to suit his purpose. "Afar in the Forest" by W.H.G. Kingston

" Under almost all circumstances, Mr. Darrin, a midshipman's word of honor should be sufficient. "Dave Darrin's First Year at Annapolis" by H. Irving Hancock

Nine or ten acres were cleared, sufficient for present use. "History of American Socialisms" by John Humphrey Noyes