roots 3? 4?

Viaduct

VIA: road or way

A bridge that carries a road or railway over a valley.

impervious

Via: road or way

Unable to be affected

Deviate

Via: Road or way

To depart from a path or plan

Obviate

Via: road or way

To make unnecessary

Defer

Fer: to carry or to bring

To put aside till later

Deference

Fer: to carry or to bring

the act of yielding to another’s authority

Confer

Fer: to carry or to bring

To consult

Inference

Fer: to carry or to bring

A conclusion not drawn from evidence but from facts at hand

Proffer

Fer: to carry or to bring

To present or offer

Proliferate

Fer: to carry or to bring

To multiply in number

Comportment

Port: to carry or to bring

The way one acts or behaves

Purported

Port: to carry or to bring

Claimed as true, but probably false