ばかり

Etymology
Shift from noun, , , the of verb , ,. The meaning seems to have shifted from amount to fully, and from there to just or only.

Particle

 * 1) (〜たばかり -ta bakari) just
 * 2) (noun + ばかり) full of
 * 3) (〜てばかりいる -te bakari iru) only, always
 * 1) (〜てばかりいる -te bakari iru) only, always
 * 1) (〜てばかりいる -te bakari iru) only, always

Adverb

 * 1) just; only; nothing but

Usage notes
Used in various senses, similarly to – "just did something", "just full of", "just sitting there". Senses are distinguished grammatically, as per forms above.