Slang expression used to strongly affirm that something is acceptable, feasible, or a good option. Often used in casual conversation or online comments.
Katakana spelling used for emphasis or in casual online writing.
Etymology
A slang phrase built from あり (OK/possible) + 寄り (leaning toward) + の + あり, literally 'an OK that leans toward OK', emphasizing strong affirmation. The exact origin is uncertain but it likely emerged from casual youth speech or internet culture.