Expression dictionary — full article
Conversational Expressions · Polite ending, Informal polite speech, Short polite reply
The -요 ending is one of the most fundamental and frequently used politeness markers in the Korean language. It transforms a verb, adjective, or noun + 이다 into an informal polite speech style, making your sentences respectful and appropriate for most everyday interactions. It's the standard way to speak politely without being overly formal.
The primary function of -요 is to express politeness and respect towards the listener. It is used at the end of declarative, interrogative, imperative, and propositive sentences. This speech level is suitable for conversations with strangers, acquaintances, colleagues, or anyone older than you, where a degree of respect is required but a formal tone is not necessary.
Beyond full sentences, -요 is also extensively used to form short, polite replies. When answering a question with a simple 'yes' or 'no', or confirming information, adding -요 makes the response polite and less abrupt. For example, '네' (yes) becomes '네, 맞아요' (Yes, that's right) or simply '네, 요' (Yes, please/Yes, I will).
The -요 ending attaches to the -아/어 form of a verb or adjective stem. This means the stem first undergoes vowel harmony rules, and then -요 is added.
For verb/adjective stems ending in ㅏ or ㅗ: Add -아요.
For verb/adjective stems ending in any other vowel or a consonant: Add -어요.
For 하다 verbs: Change 하다 to 해요.
For nouns + 이다 (to be):
Korean has several speech levels, and -요 represents the informal polite (해요체) level. This is the most versatile and commonly used speech style in daily life. It strikes a balance between formality and familiarity, making it appropriate for a wide range of social situations where you need to show respect without being stiff.
It contrasts with the formal polite (-습니다/ㅂ니다) speech level, which is used in more formal settings like news broadcasts, presentations, military contexts, or when addressing a very high-ranking person. It also contrasts with plain speech (-다), which is used among close friends, with subordinates, or in writing, and intimate speech (-아/어), used with very close friends or younger people.
Mastering the -요 ending is crucial for beginners as it allows for polite and natural communication in almost any general context.