Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Adjective: suasive  swey-siv
Usage: rare (=persuasive)
  1. Intended or having the power to induce action or belief
    "His suasive argument convinced the committee to approve the proposal";
    - persuasive

See also: coaxing, cogent, compelling, convincing, glib, glib-tongued, ingratiatory, smooth-tongued, telling, weighty