fac-, fact-, feas-, -feat, -fect, -feit, -facient, -faction, fic-, -fy, facil- (Latin: make, do, build, cause, produce; forming, shaping).absorbifacient: 
affair: 
affect: 
affected: 
affection: 
artifact: 
artifice: 
artificial: 
artificially: 
benefaction: 
benefactor: 
beneficent: 
beneficial: 
beneficiary: 
benefit: 
calorifacient: 
certificate: 
certify: 
chafe: 
chauffeur: 
clarify: 
coefficient: 
confection: 
confetti: 
configuration: 
confit: 
counterfeit: 
counterfeiter: 
defacto: 
defeat: 
defect: 
defective: 
deficient: 
deficit: 
deify: 
diffect: 
difficacious: 
difficult: 
difficulty: 
dignify: 
discomfit: 
disfigure: 
diversify: 
edification: 
edifice: 
edify: 
effect: 
effectual: 
efficacious: 
efficacy: 
efficient: 
effigy: 
ex post facto: 
exemplify: 
facient: 
facile: 
facileness: 
facilitate: 
facilitation: 
facility: 
facsimile: 
An abbreviated form of "fax" is normally used for "facsimile messages"). 
 
fact: 
faction: 
factious: 
factitious: 
factor: 
factory: 
factotum: 
factual: 
faculty: 
falsify: 
fashion: 
feasance: 
feasibility: 
feasible: 
feasibly: 
feat: 
feature: 
febrifacient: 
feckless: 
fetish: 
fiction: 
fictitious: 
figment: 
figure: 
forfeit: 
fortify: 
fructify: 
glorify: 
gratify: 
horrific: 
horrify: 
identify: 
imperfect: 
imperfection: 
indemnify: 
infect: 
infection: 
inflect: 
intensify: 
ipso facto: 
justify: 
liquefy: 
magnificence: 
magnificent: 
magnificently: 
magnifico: 
magnify: 
malefactor: 
malefic: 
1. Having an unfavorable or malignant influence.  
2. Malicious, evil. maleficence: 
maleficent: 
malfeasance: 
manufacture: 
misfeasance: 
modify: 
mollify: 
mortify: 
munificence: 
munificent: 
nonfeasance: 
notify: 
nullify: 
office: 
official: 
officiate: 
officious: 
olfactory: 
orifice: 
pacific: 
pacifist: 
pacify: 
perfect: 
perfecto: 
personify: 
petrify: 
pluperfect: 
pontiff: 
pontificate: 
prefect: 
proficiency: 
proficient: 
proficiently: 
profit: 
prolific: 
putrefy: 
qualify: 
ramify: 
rarefy: 
ratify: 
rectify: 
refectory: 
sacrifice: 
sanctify: 
satisfaction: 
satisfy: 
savoirfaire: 
scientific: 
significant: 
signify: 
simplify: 
solidify: 
somnifacient: 
specific: 
specify: 
stratify: 
stupefy: 
suffice: 
sufficient: 
superficial: 
surface: 
surfeit: 
terrific: 
terrify: 
testify: 
typify: 
unify: 
verify: 
vilify: 
vivify: 
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