The most common and most likely answer to this crossword clue is the 8 letter word APPROACH
I've seen this crossword clue in Financial Times
A
P
P
R
O
A
C
H
More clues leading to the result APPROACH
- Near a very quiet fish
- Deal with / proposal
- Move towards chap swimming round Malay boat
- Method of very quietly feeding a fish
- A cook embraces pepper crust method
- The majority of Native American nurses master procedure
- Expert in most of native American advance
- Speak to a priest on behalf of a church
- Near a swimmer, keeping very quiet
- Mostly brave, adopting professional modus operandi
Buddy explains!

The straight part
We know that "metho" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case metho = approach.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does APPROACH mean?
APPROACH noun- The act of drawing near; a coming or advancing near.
- An access, or opportunity of drawing near.
- (in plural) Movements to gain favor; advances.
- A way, passage, or avenue by which a place or buildings can be approached; an access.
- A manner in which a problem is solved or policy is made.
- (used only in the plural, fortification) The advanced works, trenches, or covered roads made by besiegers in their advances toward a fortress or military post.
- An approach shot.
- The way an aircraft comes in to land at an airport.
- The area before the lane, in which a player may stand or run up before bowling the ball.
- To come or go near, in place or time; to draw nigh; to advance nearer.
- To draw near, in a figurative sense; to make advances; to approximate.
- To come near to in place, time, character or value; to draw nearer to.
- To make an attempt at (solving a problem or making a policy).
- To speak to, as to make a request or ask a question.
- To take approaches to.
- To bring near; to cause to draw near.