1. In a harmfully insidious manner
   "these drugs act insidiously"
   - perniciously

See also: insidious

• hydroxymethyl
• hydroxyproline
• hydroxytetracycline
• hydroxyzine
• hydroxyzine hydrochloride
• Hydrozoa
• hydrozoan
• Hydrus
• Hyemoschus
• Hyemoschus aquaticus
• hyena
• hyena dog
• hyerreal
• hyerreal number
• hyetology
• Hygeia
• hygiene
• hygienic
• hygienical
• hygienically
• hygienics
• hygienise
• hygienist
• hygienize
• hygro-