Ultracrepidarian describes someone giving opinions beyond their expertise. Here is the meaning, origin, and a few clear examples.

Both dove and dived are correct past tense forms of dive. The difference is mainly regional, and both appear in standard English.

The popular Port Out, Starboard Home story is catchy, but evidence is lacking. Most experts treat P.O.S.H. as a later backronym.

“OK” likely began as a playful abbreviation of “oll korrect” in 1839, then spread through politics and telegraphy into everyday English.