utilis (useful; ☞ conducibilis does not belong to good prose): salubris (as masculine, Cic., Cels.; saluber, Varr. and Ov.): salutaris (salutary; the latter also with ad aliquid): efficax (efficacious): commodus: accommodatus: aptus (convenient, fit). To be useful, utilem, etc. esse; usui, utilitati esse; ex usu esse; prodesse; conducere; for any purpose, valere or vim habere ad aliquid (to have influence upon anything): prodesse or adjuvare ad aliquid (to be of use toward effecting an object; the latter also, with ut).