喫煙はガンとほとんど関係がないと思うのはおろかです。
Sentence Analyzer
English Translation
It's foolish to think that smoking has little to do with cancer.
Furigana
Romanji
Kitsuen wa gan to hotondo kankei ga nai to omou no wa oroka desu.
Words
喫煙
(きつえん)
smoking
は
(は)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
雁
(がん、かり、ガン、カリ)
wild goose; glans; head of a penis
と
(と)
if; when; and; with; particle used for quoting (with speech, thoughts, etc.); quoting particle; promoted pawn; indicates question (sentence end)
殆ど
(ほとんど)
mostly; nearly; practically; well-nigh; almost invariably; all but; just about; almost
関係
(かんけい)
relation; relationship; connection; participation; involvement; concern; influence; effect; sexual relations; sexual relationship; related to ...; connected to ...
が
(が)
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
無い
(ない)
nonexistent; not being (there); unpossessed; unowned; not had; unique; indicates negation, inexperience, unnecessariness or impossibility; not ...; to not be...; to have not ...
思う
(おもう)
to think; to consider; to believe; to think (of doing); to plan (to do); to judge; to assess; to regard; to imagine; to suppose; to dream; to expect; to look forward to; to feel; to desire; to want; to recall; to remember
の
(の)
indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question
疎か
(おろそか、おろか)
neglect; negligence; carelessness; not to mention ...; needless to say ...; not to speak of ...; not only ...
です
(です)
be; is
Kanji
Readings: キツ、 の.む
Meanings: consume, eat, drink, smoke, receive (a blow)
Readings: エン、 けむ.る、 けむり、 けむ.い
Meaning: smoke
Readings: カン、 せき、 -ぜき、 かか.わる、 からくり、 かんぬき
Meanings: connection, barrier, gateway, involve, concerning
Readings: ケイ、 かか.る、 かかり、 -がかり、 かか.わる
Meanings: person in charge, connection, duty, concern oneself
Readings: シ、 おも.う、 おもえら.く、 おぼ.す
Meaning: think