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Fern

Y Combinator 2023 · Acquired B2B Engineering, Product and Design buildwithfern.com

Instantly offer SDKs and API Docs

Y Combinator's description, shown to identify the company. We rate the name, not the business.

Formerly Fern, fern

Evocativity EVOC : red
Fern gives no API or documentation cue
Brevity BREV : green
4 letters, 1 syllable. Up to seven letters is green, eight at two syllables too; up to ten yellow, eleven or more red.
Greppability GREP : red
Found inside 35 other dictionary words.
Googlability GOOG : red
Fern is an ordinary plant name
Pronounceability PRON : green
The familiar word reads clearly
Spellability SPEL : green
The common plant word is easy to spell
Verbability VERB : red
No natural developer-tool verb
Nominology
50
All seven dimensions and .com ownership, weighted as set out on Methodology.
Fluency
100
Brevity and pronounceability only: the subset with published outcome evidence behind it.
PG grade
2 / 4
Graham's own four-step ladder.
Exact .com
Not owned
Shape
real word
Length
4 chars, 1 syllable
Distinctiveness
arbitrary

Rubric version 2026.10.20-1, judged by gpt-6.1-sol (agent). This scores the name only. See Methodology.

These judged dimensions came from an AI agent working through the judging queue in a chat, on the same rubric the scoring pipeline sends. The agent passed the calibration exam before its work was accepted, and each batch it judged hid two names with known answers as a check. The model is named as the agent reported it.