un·der·gird 
(ŭn′dər-gûrd)
(ŭn′dər-gûrd)tr.v. un·der·gird·ed or un·der·girt (-gûrt), un·der·gird·ing, un·der·girds
To support or strengthen from beneath.
- doublehanded
- double-handedly
- double-header
- doubleheader
- double helix
- double-hung window
- double indemnity
- double jeopardy
- double-jointed
- double knit
- double-knit
- double negative
- doubleness
- double-park
- double-parker
- double play
- double pneumonia
- double possessive
- double-quick
- doubler
- double reed
- double-reed
- double refraction
- double replacement
- double reverse