optionally

At your discretion

Optionally means as an option rather than a requirement—you may do it or not: The software optionally encrypts your files.

It signals that what follows is available but not mandatory: Serve optionally with whipped cream.

choice

voluntary

Done by choice

decision · preference · selection · pick · choose · decide · volition · autonomy · deliberation · consideration

non-mandatory

voluntary

Done by choice

noncompulsory · nonobligatory · unnecessary · unforced · unrequired · waivable · dispensable · facultative · permissive · skippable

flexibility

adaptable

Able to adjust readily

configurable · alterable · changeable · variable · tailorable · versatile · open-ended · revocable · negotiable · scalable

adverb

voluntarily

Without external compulsion

conditionally · preferentially · arbitrarily · sporadically · occasionally · intermittently · incidentally · casually · permissively · flexibly

Categories
Opposites
requirement/obligation

optionallymandatorily

By force of rule

obligatorily · compulsorily · perforce · forcibly · by default

logical necessity

optionallynecessarily

As an unavoidable consequence

essentially · inevitably · inherently · intrinsically · fundamentally

Phrases
Family

optional, optionality

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G