> taceo, -ui, -itum, --ere "schweige"
> idg. Basis *take:i, in "taceo". (Walde-Hoffmann)
Pokorny doesn't do much better, offering *tak, take:(i) (p 1055).
Rix is more believable with *pteh2k (p446) "sich drucken" = bow oneself,
humble onesefl
He connects it with Greek pto:sso: (shrink from) and pte:sso: (crouch from
fear of; scare); Armenian t'ak'eaw (hide oneself) as well as the Latin
and OHG / Gothic.
The initial *pt- he justifies from Klingenschmitt " Das altarmenische
Verbum" pp 70, 78, 84, 99.
Rix gives no other verbs beginning with pt-.
Pokorny gives one noun, *ptel(e)ya: the name of a tree (Greek, Latin,
Armenian).
Mann (who uses a lot of Armenian and Albanian) offers 5, the first 4 from
WP.: *pta: < *pet, *ptelewa: (a tree), *pterom (wing), *ptersna:
(ankle), *ptu:lis (armenian only, = weak). He gives *tak as the source of
Latin taceo, and connects it to Ir tacvhtaim = choke.
Latin verbs with -a- vocalism have a number of different origins, usually
developing the -a- within Italic. There's work to be done there, someone!
Peter