phaen- /fēn-/ or phaeno- /fē-no- or -nō-/ same as phen- or pheno-

• giantisms
• giant-killer
• giant-killers
• giant-killing
• giantlier
• giantliest
• giantly
• giant panda
• giant pandas
• giant powder
• giantries
• hydrograph
• hydrographer
• hydrographers
• hydrographic
• hydrographical
• hydrographically
• hydrographies
• hydrographs
• hydrography
• hydroid
• hydroids
• hydrokinetic
• hydrokinetics
• hydrolase