Oxford English Dictionary

The most comprehensive guide to (largely British) English. The OED contains not only current meanings of words but also every meaning the word has ever had, so don’t just read the first definition on the page! Note that the OED is subscription-only, so you’ll need to be logged in at Bilkent or via VPN to use it.

Merriam Webster

The standard dictionary for American English.

Chambers

A good all-round dictionary, primarily for British English but with American versions of words as well. This site also allows you to search the Chambers Thesaurus.

Sesli Sözlük

A community-sourced Turkish-English dictionary, with pronunciation. Use with caution.

Tureng

A community-sourced Turkish-English dictionary, with pronunciation. Use with caution.

Bab.la

Has bilingual dictionaries and translations of useful phrases for specific purposes (e.g., job applications).

Grammarly

The most popular online grammar checker. Like other grammar checkers, use with caution; it may miss errors or produce false positives.