insipid
in.sip.id \in-'sip-*d\ \.in(t)-s*-'pid-*t-e-\ \in-'sip-*d-le-\ aj [F & LL; F insipide, fr. LL insipidus, fr. L in- + sapidus] savory, fr. sapere to taste - more at SAGE 1: lacking taste or savor : TASTELESS 2: lacking in qualities that interest, stimulate, or challenge : DULL , FLATINSIPID implies a lack of sufficient taste or savor to please or interest: VAPID suggests a want of liveliness, force, or spirit; FLAT implies extreme vapidness; JEJUNE suggests a lack of rewarding or satisfying substance; BANAL stresses the complete absence of freshness, novelty, or immediacy; INANE implies a want of significance or cogency - in.si.pid.i.ty n SYN syn VAPID, FLAT, JEJUNE, BANAL, INANE:
Webster's English Dictionary