OriginFrom Latin constāre.
Formscostâ(infinitive) · costânt(gerund) · costât(masculine, participle, past, singular) · costâts(masculine, participle, past, plural) · costâde(feminine, participle, past, singular) · costâdis(feminine, participle, past, plural) · o costi(first-person, indicative, present, singular) · tu costis(indicative, present, second-person, singular) · al(indicative, present, singular, third-person) · e coste(indicative, present, singular, third-person) · o costìn(first-person, indicative, plural, present) · o costais(indicative, plural, present, second-person) · a costin(indicative, plural, present, third-person) · o costavi(first-person, imperfect, indicative, singular) · tu costavis(imperfect, indicative, second-person, singular) · al(imperfect, indicative, singular, third-person) · e costave(imperfect, indicative, singular, third-person) · o costavin(first-person, imperfect, indicative, plural) · o costavis(imperfect, indicative, plural, second-person) · a costavin(imperfect, indicative, plural, third-person)
Source: Wiktionary