| A | B |
| PRE | before |
| predilection | (n.): a tendency to think favorably of something in particular; partiality; preference |
| presage | (n.): an indication or warning of a future occurrence; an omen |
| predisposition | (n.): the state of being predisposed; tendency, inclination, or susceptibility |
| preponderance | (n.): superiority in power or influence |
| precocious | (adj.): pertaining to uncharacteristically early development, esp. in maturity |
| STRU | build |
| STRUCT | build |
| construe | (v.): to give the meaning or intention of; explain; interpret |
| infrastructure | (n.): the basic, underlying framework or features of a system or organization |
| instrumental | (adj.): serving or acting as an instrument or means; useful; helpful |
| obstruction | (n.): something that obstructs, blocks, or closes up with an obstacle or obstacles; obstacle or hindrance |
| FLU | flow |
| affluent | (adj.): having an abundance of wealth, property, or other material goods; prosperous; rich |
| fluctuate | (v.): to change continually; shift back and forth; vary irregularly |
| fluency | (adj.): spoken or written with ease |
| effluent | (adj.): flowing out or forth |
| fluvial | (adj.): of or pertaining to a river |