1.
to incline; to lean; to tilt
To slope or slant in a particular direction.
2.
to decline; to wane
To decrease in power, prosperity, or intensity.
傾く is intransitive (自動詞). The transitive pair is 傾ける (to incline something, to devote).
ASPECT ({ている}):
傾いている indicates a resulting state of being tilted or leaning.
COMMON PATTERNS:
- 日が傾く (the sun sets/wanes)
- 右に傾く (to lean to the right)
- ~に傾く (to lean toward ~)
- 家が傾く (a family declines - figurative)
PARTICLE PATTERNS:
- ~が傾く: What is leaning
- ~に傾く: Direction of leaning, or what one is inclined toward
FIGURATIVE USAGE:
日が傾く literally means "the sun inclines" but idiomatically refers to sunset. The expression 家が傾く means a family's fortunes are declining.