The most common and most likely answer to this crossword clue is the 7 letter word EASIEST
I've seen this crossword clue in The Sunday Telegraph
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More clues leading to the result EASIEST
- Point about rising energy is most straightforward
- Find spice regularly in the Orient? Nothing's simpler
- Point about that is: last of clues the first to be solved, perhaps?
- Perhaps see it as being most comfortable
- See it as anagram — nothing could be simpler
- It couldn’t be calmer so some take a siesta
- Novel, see, is at least testing!
- Most natural in Spain — snooze showing bottom on top!
- Liquid asset’s acquired that is least complicated
- A period to rest briefly after end of chore that’s most basic
Buddy explains!

The straight part
We know that "least testing!" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case least testing! = easiest.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 EASIEST mean?
EASIEST adjective- Comfortable; at ease.
- Requiring little skill or effort.
- Causing ease; giving comfort, or freedom from care or labour.
- Free from constraint, harshness, or formality; unconstrained; smooth.
- (of a woman) Consenting readily to sex.
- Not making resistance or showing unwillingness; tractable; yielding; compliant.
- Not straitened as to money matters; opposed to tight.