Where does “cro” come from?

cro (English) comes from English c̄, from Latin cum, from Old Latin com, from Proto-Italic kom, from Proto-Indo-European ḱóm, from Proto-Indo-European ḱe, from Middle English kyt, from German kitt — to bend; curve; arch; vault; to bow, bend, arch,...

Ancestry of “cro”, step by step

cro traces back through 3 separate lines of ancestry.

via English

StepLanguageWordMeaning
1EnglishWith
2Latincumwith, along with; at; -fold
3Old LatincomAlternative form of cum
4Proto-Italickomwith, along, at
5Proto-Indo-Europeanḱómbeside, near, by, with
6Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
7Middle Englishkyt
8Germankittputty certain kinds of cement used for fixing e.g. window panes
9Old High Germankuti
10Proto-West Germanickwidugum, resin
11Proto-Germanickweduzresin
12Proto-Indo-Europeangʷet-resin, gum; to say, speak
13Proto-Indo-Europeangū-to bend; curve; arch; vault; to bow, bend, arch,...

via English bro

StepLanguageWordMeaning
1Englishbrobrother; a male sibling; brother; a male comrade...
2EnglishbrewTo make tea or coffee by mixing tea leaves or...
3English-erA person or thing that does an action indicated...
4Middle English-eragentive suffix; agent noun suffix
5Old French-erAlternative form of -ier, verbal suffix;...
6Latin-ārefirst conjugation
7Proto-Italic-āōForms primarily denominative verbs
8Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
9Proto-Indo-European-yétiCreates intransitive, often deponent,...
10Proto-Indo-Europeanyé-
11Chichewaiyehe, she

via English chronic

StepLanguageWordMeaning
1EnglishchronicOf a problem, that continues over an extended...
2EnglishchronicalObsolete form of chronic; Misspelling of...
3Old FrenchcronikeAlternative form of cronicle
4LatinchronicusOf or pertaining to time; chronic
5Ancient Greekχρονικόςof or concerning time, temporal; chronological
6Ancient Greek-ικόςof or pertaining to, in the manner of; -ic
7Ancient Greek-κόςforms adjectives with the sense of 'of or...
8Proto-Indo-European-ḱos-y, -ic
Every word from Proto-Indo-European gū-