がたい

The suffix がたい attaches to a verb stem to express that something is very difficult to do, often implying it is nearly impossible. It carries a stronger and more literary nuance than にくい, which simply means "hard to do."

Usage and nuance

がたい tends to express psychological or emotional difficulty rather than physical difficulty. It is used with verbs related to mental processes, feelings, and judgments – such as しんじる信じる (to believe), りかい理解する (to understand), ゆるす許す (to forgive), and そうぞう想像する (to imagine).

Because it implies near impossibility, がたい is stronger than simply saying something is difficult. Saying ゆるしがたい許しがたい doesn't just mean "hard to forgive" – it suggests the speaker finds it almost unforgivable.

Comparison with にくい

While both がたい and にくい mean "difficult to ~", they differ in important ways:

• がたい focuses on emotional or abstract difficulty and sounds more formal or literary. It is used in written language or formal speech.
• にくい can describe both physical and psychological difficulty and is more common in everyday conversation.

For example, you would say このにく肉はたべにくい食べにくい (This meat is hard to eat) for physical difficulty, but not 食べがたい. However, for emotional difficulty:

Common collocations

がたい frequently appears with a set of verbs in somewhat fixed expressions:

• しんじがたい信じがたい – hard to believe
• りかい理解しがたい – hard to understand
• ゆるしがたい許しがたい – hard to forgive
• たえがたい耐えがたい – hard to endure
• えがたい得がたい – hard to obtain, rare
• そうぞう想像しがたい – hard to imagine
• いいがたい言いがたい – hard to say, hard to put into words

Grammatical behavior

がたい conjugates as an い-adjective. It can be used attributively (before a noun) or predicatively (at the end of a sentence).