Initial “exp-“
Initial “sup-, sep-, surp-“
SP-
SP-
expand
expanded
SPAPBD
SPAPBTD
expanse
expansion
SPAPBS
SPAPBGS
expedient
expedience
SPAOEPBT
SPAOEPBS
expedition
SPEGS
expense
SPEPBS
experience
experienced
SPERPBS
SP*ERPBS
expert
SPERT
expire
SPAOEUR
expiration
SPAOEURGS
explain
SPHRAEUPB
explanation
SPHRAPBGS
exploit
SPHROEUT
exploitation
SPHROEUGS
explore
SPHROR
exploration
SPHRORGS
explorer
SPHROER
explosive
SPHRO*EFS
export
SPO*RT
express
expressed
expressing
expression
expressive
SPRES
SPRESD
SPREFG
SPREGS
SPR*EFS
expulsion
SPULGS
experiment
SPERPLT
experimentation
SPERPLGS
explanatory
SPHROERPBT