Questions & Answers about Ο στίχος είναι όμορφος.
Ο is the masculine singular form of the definite article, so here it means the.
It matches στίχος, which is a masculine singular noun. Greek articles change form depending on gender, number, and case.
Because στίχος is a masculine singular noun in the nominative case here, and the matching definite article is ο.
Greek articles must agree with the noun, so you cannot just use any form of the.
Because όμορφος is an adjective, and in Greek adjectives must agree with the noun they describe.
Since στίχος is masculine, singular, and nominative, the adjective also appears in the masculine singular nominative form:
- ο στίχος είναι όμορφος = masculine
- η μελωδία είναι όμορφη = feminine
- το τραγούδι είναι όμορφο = neuter
So the -ος ending here shows agreement, not just dictionary form.