English verbs: fall/fallen, slide/?

[unclelem]

A friend at lunch was trying to express how much our company had changed for the worse in recent times.

He started to say (using the metaphor of sliding downhill):

"That just goes to show how far our company has… "

And paused unable to complete the sentence with a form of “slide”.

If he had used a metaphor of falling, he could have said “how far our company has fallen”.
Being a native English speaker, and thus having dutifully ignored learning such exact terminology when applied to my own language, I’m at a loss to explain why there seems to be no appropriate “perfect” tense of the verb “to slide” in English. (if perfect is the word I’m looking for to describe the verb tense in question).

Is there such a word? (slote?) If not what property of this verb is inhibiting using it in this fashion?

Please enlighten me.

[Sunspace]

Now I want to say ‘slidden’ but that doesn’t seem to be correct. From Apple’s inbuilt dictionary app:

slide |slīd|

verb ( past slid |slid|) [ intrans. ]

move along a smooth surface while maintaining continuous contact with it : she slid down the bank into the water | [as adj. ] ( sliding) the tank should have a sliding glass cover.
• [ trans. ] move (something) along a surface in such a way : she slid the keys over the table.
• move smoothly, quickly, or unobtrusively : I quickly slid into a seat at the back of the hall.
• [ trans. ] move (something) in such a way : she slid the bottle into her pocket.
• change gradually to a worse condition or lower level : the country faces the prospect of sliding from recession into slump.

noun

1 a structure with a smooth sloping surface for children to slide down.

• a smooth stretch or slope of ice or packed snow for sledding on.
• an act of moving along a smooth surface while maintaining continuous contact with it : use an ice ax to halt a slide on ice and snow.
• Baseball a sliding approach to a base along the ground.
• a decline in value or quality : the current slide in house prices.

2 a part of a machine or musical instrument that slides.
• the place on a machine or instrument where a sliding part operates.
• slide guitar : I’d been playing slide for years.

3 (also microscope slide) a rectangular piece of glass on which an object is mounted or placed for examination under a microscope.
• a mounted transparency, typically one placed in a projector for viewing on a screen : [as adj. ] a slide show.

PHRASES
let something slide negligently allow something to deteriorate : Papa had let the business slide after Mama’s death.

DERIVATIVES
slidable adjective

ORIGIN Old English slīdan (verb); related to sled and sledge 1 . The noun, first in the sense [act of sliding,] is recorded from the late 16th cent.

So it looks like it would be ‘has slid’.

[Indistinguishable]

You are looking for the “past participle” of the verb “slide”, which is usually “slid”, as Sunspace points out, though I believe (and dictionary.com confirms) “slidden” is also used by some speakers.

[Earl_Snake-Hips_Tucker]

That just goes to show how far our company has… "
“. . . slud.”
While not proper usage, it still conveys the meaning, much like the now-accepted “snuck” which in my experience is heard more commonly than “sneaked,” just not in formal writing.

[panache45]

Yup, slid.

[Giles]

Yes, “slid”, but it’s unusual enough to feel a bit odd. “How far our company has slidden” sounds plausible to me, too, but I’m pretty sure it’s wrong without looking at a dictionary.

[pulykamell]

@Giles

Yes, “slid”, but it’s unusual enough to feel a bit odd. “How far our company has slidden” sounds plausible to me, too, but I’m pretty sure it’s wrong without looking at a dictionary.

“Has slid” sounds perfectly natural to me. “Had slidden” is all kinds of weird.

[DrFidelius]

I had slidden, but a poultice cleared it up.

[Gukumatz]

@DrFidelius

I had slidden, but a poultice cleared it up.

I had poultry, but a slide cleared it out.