Peruse

Webster online dictionary defines the word as:

1 a : to examine or consider with attention and in detail,
b : to look over or through in a casual or cursory manner
So which is it, in “Detailed” or “Perfunctory” manner? And how does one know which is meant when?

AHD4 lists only the ‘detailed’ definition and, in the usage note, states that the usage panel voted down the ‘perfunctory’ one. If you wish to be fundamentalist about it you might not want to use it in reference to reading at all, as a glance at the etymology will show. As to which meaning applies in any given instance of its use, you’ll have to rely on context.

There are some words in English that have two different and opposing definitions:

moot: “undebatable” (“The point is moot.”)
“a source of debate” (“Moot court.”)

Fast: rapid (“That boat is fast.”)
unmoving (“That boat is fast to the dock.”)

cleave: to split (“He cleaved the log in half.”)
to join together (“A husband shall cleave to his wife.”)

You tell the difference by context. Sometimes, especially with words that have changed their meaning over time, you just can’t tell.

Which are called contronms (or sometimes antonyms). A google nets you thousands of them, it’s quite amazing. And many are quite common and almost completely unambiguous in context.

bolt - secure, run away

buckle - fasten, fall apart

by - multiplication (e.g., a three by five matrix), division (e.g., dividing eight by four)

cleave - separate, adhere

consult - ask for advice, give advice

custom - usual, special

deceptively smart - smarter than one appears, dumber than one appears

dike - wall, ditch

dollop - a large amount, a small amount

dust - add fine particles, remove fine particles

enjoin - prescribe, prohibit

fast - quick, unmoving

Here’s a shortened list from the first site returned.

Are raise/raze homocontronms?

That’ll learn me to copy Shade.

contronym (also the synonym antagonym)’

Making my pissweak joke: Are raise/raze homocontronyms?