# ER

ER or Er may refer to:

## Language

• -er, a suffix added to adjectives or adverbs to form a comparative (e.g. fast to faster)
• -er, a suffix added to a verb to make it an agent noun (e.g. cut to cutter)
• Oxford "-er", a suffix used to form words like rugger and footer
• "er", a filler (linguistics)
• Er (Cyrillic) (Р / р), a letter of the Cyrillic alphabet corresponding to the Latin letter "R"
• Er, alternate spelling for Yer (Ъ / ъ), the hard-sign letter of the Cyrillic alphabet