<entry id="2205259" stat="D" corpus="jmdict" type="jmdict">
<ent_corp type="jmdict">jmdict</ent_corp>
<ent_seq>2856070</ent_seq>
<r_ele>
<reb>がっしと</reb>
</r_ele>
<sense>
<pos>&adv;</pos>
<pos>&vs;</pos>
<misc>&on-mim;</misc>
<gloss>firmly</gloss>
<gloss>solidly</gloss>
<gloss>heartily</gloss>
</sense>
<info>
<audit time="2022-08-20 20:48:14" stat="A" unap="true">
<upd_name>Peter Maydell</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_detl>I suggest this a bit tentatively, because I don't find it in other online dictionaries, though the weblio thesaurus has an entry for がっしと掴む which it defines as ものを手などでしっかりと持つこと. I am guessing from that plus the other examples I see that this is a variant of がしっと and I have copied that entry's definition.

I originally found this because jpdb.io's corpus has a fair number of these, which it currently mis-parses and files under がっする because of the lack of a JMdict entry for がっし.

Google searches for "がっしと掴む" seem to get a reasonable number of hits. Google book search also finds a few hits in published books. Still, maybe this is all just typos ?? I leave it up to your judgement whether this ought to get an entry.

You should check the tags also, as I think I've probably got those wrong (attempting to copy from がしっと).</upd_detl>
<upd_refs>https://thesaurus.weblio.jp/content/%E3%81%8C%E3%81%A3%E3%81%97%E3%81%A8%E6%8E%B4%E3%82%80

https://jpdb.io/vocabulary/1284440/%E3%81%8C%E3%81%A3%E3%81%99%E3%82%8B?expand=p#examples_plus_2466231291</upd_refs>
</audit>
<audit time="2022-08-20 23:37:04" stat="D">
<upd_uid>jwb</upd_uid>
<upd_name>Jim Breen</upd_name>
<upd_email>...address hidden...</upd_email>
<upd_detl>I think it's a variant member of the がっしり(と)/がっしと clan. The meanings and usage align.
Probably the cleanest thing is to add it to the ガシッと/がしっと entry. I'll do that and keep it open in case anyone wants to comment/expand/challenge.</upd_detl>
<upd_refs>ガシッと	15971
がしっと	12251
がっしと	1961
ガッシと	1090
----
がっしと掴む	59
がっしりと掴む	215
がしっと掴む	280</upd_refs>
</audit>
</info>
</entry>