A rut is a groove in the earth, like an indent caused by wheels. It's also a boring routine that can be hard to break. If you’re stuck in a rut, you’ve been doing the same old thing for too long.

If you see a groove in the ground, especially one caused by a bike or car, that's a rut. If a rut is deep enough, you could get stuck in it, which may be why the word has another meaning. If your life has become boring, stale, and monotonous, you're in a rut. Someone who works the same job for decades may feel like they're in a rut and need to make a change.

Definitions of rut
  1. noun
    a groove or furrow (especially one in soft earth caused by wheels)
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    type of:
    channel, groove
    a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record)
  2. verb
    hollow out in the form of a furrow or groove
    synonyms: furrow, groove
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    type of:
    cut into, delve, dig, turn over
    turn up, loosen, or remove earth
  3. noun
    a settled and monotonous routine that is hard to escape
    “they fell into a conversational rut
    synonyms: groove
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    type of:
    modus operandi, routine
    an unvarying or habitual method or procedure
  4. noun
    applies to nonhuman mammals: a state or period of heightened sexual arousal and activity
    synonyms: estrus, heat, oestrus
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    anestrum, anestrus, anoestrum, anoestrus
    applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus
    type of:
    physical condition, physiological condition, physiological state
    the condition or state of the body or bodily functions
  5. verb
    be in a state of sexual excitement; of male mammals
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    type of:
    have the quality of being; (copula, used with an adjective or a predicate noun)
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