abstemious, caution, cautious, caveat, circumspect, dangerous, deliberately, deny, diffident, dubious, economical, fetter, forebode, foresight, forestall, gauge, halt, hesitant, impending, indecisive, inhibit, introvert, leery, misgiving, moderate, oblique, ominous, portend, presage, provident, prudent, qualm, reticent, scrupulous, secular, sober, sobriety, sparing, subtle, suspicious, temporize, timid, timorous, wary