underact

v [I, Tn] act (a part) with less spirit, force, etc than expected 表演（角色）不够尽心、 尽力等: He underacted the title-role to considerableeffect. 他演剧名角色演得很不带劲. Cf 参看 overact.

undeclared, undefended, undefined, undemanding, undemonstrative, undeniable, undeniably, under, under arms, under control, under the charge of, under the heel of, under the order of, under way, under-, under-secretary, under-sexed, under-side, underachieve, underachiever, underarm, underbelly, underbid, underbrush, undercarriage, undercharge, underclothes, undercoat, undercover, undercurrent, undercut, underdeveloped, underdog, underdone, underestimate, underexpose, underexposure, underfed, underfelt, underfloor,