Yogin

n.calm, resilientformal

What it means

A person devoted to the disciplined practice of yoga.

Reach for it when using a less common traditional term for sustained yoga practice

The yogin began each dawn with breath work and meditation.

everyday
yogi
when the established English term is clearest
not when Yogi may be used casually for any class attendee, while yogin can suggest deeper discipline.
warm
meditator
when contemplative practice is the relevant activity
not when Many meditators do not practice yoga, and yoga extends beyond meditation.
warm
seeker
when spiritual inquiry matters more than technique
not when A seeker may follow no yoga tradition at all.
professional
yoga practitioner
when neutral inclusive description is preferred
not when The phrase names participation without implying spiritual commitment.
formal
ascetic
when rigorous self-discipline and renunciation are factual
not when A yogin need not withdraw from comfort or ordinary social life.
literary
adept
when attained mastery has been demonstrated
not when Adept overstates the level of every committed practitioner.

experienced yogin
The experienced yogin adjusted the sequence for an injured student.
disciplined yogin
A disciplined yogin values rest as well as effort.
life of a yogin
The memoir describes the working life of a yogin in the city.

Yogin is less common than yogi in present-day English and may carry specific meanings within particular traditions.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.