უნდა

Etymology
The verbal meaning comes directly from Old Georgian უნდა, which used to be the imperfect, thus the -დ- screeve marker, the modern form created required screeves (უნდოდა, უნდოდეს)

Particle

 * 1) have to, should, ought to, need, must

Usage notes

 * The particle is accompanied by the present subjunctive, optative, or pluperfect screeves of a verb.
 * If the present subjunctive screeve is used then the speaker thinks that an action described by a verb should have been done. Adverbs and  are often used after the verb.
 * If one wants to emphasize a strong obligation upon someone, they may use the adverb just before the particle.

Verb

 * 1) to want