extra

noun 0.838

add

noun 0.718

addition

noun 0.716

supplementary

noun 0.715

additionality

noun 0.714

plus

noun 0.713

addendum

noun 0.710

add-on

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supplemental

noun 0.693

other

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supplement

noun 0.674

some more

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adjunctive

noun 0.664

adjunct

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more

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optional

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bonus

noun 0.635

extra service

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additive

noun 0.631

added time

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supernumerary

noun 0.617

something else

noun 0.614

value added

noun 0.613

extension

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ancillary

noun 0.603

accessorial

noun 0.600

append

noun 0.595

appending

noun 0.588

appendage

noun 0.588

accessary

noun 0.585

secondary

noun 0.584

accessory

noun 0.583

appendix

noun 0.583

extra credit

noun 0.574

extraordinary

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nonessential

noun 0.572

attribute

noun 0.572

adjuvant

noun 0.571

surplus

noun 0.569

annex

noun 0.569

extraneousness

noun 0.569

encore

noun 0.568

suffix

noun 0.568

addend

noun 0.568

admixture

noun 0.567

adjective

noun 0.567

side note

noun 0.567

excess

noun 0.567

auxiliary

noun 0.567

special

noun 0.566

different

noun 0.566

furthering

noun 0.564

exceptional

noun 0.562

alternate

noun 0.561

augment

noun 0.560

plus sign

noun 0.559

annexure

noun 0.558

increase

noun 0.558

suppletive

noun 0.557

item

noun 0.556

extern

noun 0.554

extracurricular

noun 0.554

alternative

noun 0.554

adder

noun 0.553

external

noun 0.553

only

noun 0.552

suppletion

noun 0.551

superfluity

noun 0.551

superadditivity

noun 0.551

subtitle

noun 0.550

adduct

noun 0.550

typedef

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superfluousness

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subsequent

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above

noun 0.548

surcharge

noun 0.547

continued

noun 0.545

unexpected

noun 0.543

value-added service

noun 0.543

subjoin

noun 0.543

having

noun 0.543

extra time

noun 0.541

aside

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better

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category

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attachment

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something

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extrahuman

noun 0.538

premium

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previous

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ext

noun 0.537

prefix

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noun

noun 0.535

admix

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anything

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increasing

noun 0.533

but

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accessory equipment

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exceeding

noun 0.531

and

noun 0.530