Enhance your vocabulary with a goal of 15,000 words. This isn't just a vocabulary size test; it's a valuable learning tool designed to boost your word power.
✨ Our new feature!
Vocabulary size test
Find out your vocabulary size.
Check out here
Advanced Robby Lou's Learner's English-Indonesian Dictionary info

menu_book Dictionary Levels

close
Premium Features Locked 🔒 You need to log in and have an active dictionary package to access Standard, Premium, and English-English dictionaries.
  • BASIC Beginner Essentials Ideal for learners just starting out. You’ll find the most frequently used words here—perfect for building a solid foundation in English.
  • STANDARD Intermediate Core Take your skills to the next level. This collection focuses on versatile words and phrases, helping you communicate more naturally in everyday situations.
  • PREMIUM Advanced Usage Challenge yourself with nuanced expressions and less common vocabulary. Mastery here will help you understand and produce sophisticated English.
Log In See Packages
Loudictionary
English-Indonesian (Advanced) expand_more
×
radio_button_unchecked English-Indonesian (Basic)
radio_button_unchecked English-Indonesian (Standard)
radio_button_checked English-Indonesian (Advanced)
radio_button_unchecked Indonesian-English
radio_button_unchecked English-English-Indonesian
radio_button_unchecked English-English
radio_button_unchecked Sentence Bank English-Indonesian
radio_button_unchecked Sentence Bank Indonesian-English
English-English-Indonesian English-Indonesian (Basic) English-Indonesian (Standard) English-Indonesian (Advanced) Select a dictionary change_circle
info_outline Basic Access
Upgrade
English-Indonesian (Basic)
US 🔉 UK 🔉

cost·ly
/'kQstli; US 'kO;stli/
adjective
(cost·lier, cost·li·est)
(juga more costly, most costly)
1 mahal
▪ Buying new car is very costly.
Membeli mobil baru sangatlah mahal.
2 menyebabkan masalah atau kerugian; merugikan
▪ a costly mistake/failure
kesalahan/kegagalan yg merugikan

Sentence Bank
arrow_back
© 2026 Mobile English Eplus.
Privacy Policy About Us

Debug panel dictionary