Cryptic crossword clue
Suggestion inadequate, first to last 4

The most common and most likely answer to this crossword clue is the 4 letter word HINT

I've seen this crossword clue in The Guardian
H
I
N
T


Buddy explains!

The straight part
We know that "Suggestion" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case suggestion = hint.
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 HINT mean?

HINT noun
  1. A clue.
  2. A tacit suggestion that avoids a direct statement.
  3. A small, barely detectable amount of.
  4. Information in a computer-based font that suggests how the outlines of the font's glyphs should be distorted in order to produce, at specific sizes, a visually appealing pixel-based rendering. Also known as hinting.
  5. An opportunity; occasion; fit time.
HINT verb
  1. To suggest tacitly without a direct statement; to provide a clue.
  2. To bring to mind by a slight mention or remote allusion; to suggest in an indirect manner.
  3. To develop and add hints to a font.

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