in a harmfully insidious manner; these drugs act insidiously
[ Syn: perniciously , perniciously , perniciously , perniciously , perniciously , perniciously , perniciously , perniciously ]
in a harmfully insidious manner; these drugs act insidiously
[ Syn: perniciously , perniciously , perniciously , perniciously , perniciously , perniciously , perniciously , perniciously ]